AIYD - Nowak,J.Z.; Bogucki,A.; Liberski,P. - Brain histamine metabolism in transmissible spongiform encephalopathy (scrapie) - Journal of Neural Transmission 1986; 65(3-4): 187-92
AWNP - Sigurdson,C.J.; Heikenwälder,M.; Manco,G.; Hornemann,S.; Nilsson,P.; Liberski,P.; Ott,D.; Rülicke,T.; Pahnke,J.; Baumann,F.; Miele,G.; Stitz,L.; Schwarz,P.; Wüthrich,K.; Aguzzi,A. - Elk-like prion protein triggers spontaneous spongiform encephalopathy with florid plaques in mice - International Conference - Prion 2006: Strategies, advances and trends towards protection of society - 3.10.-6.10.2006, Torino, Italy, Lingotto Conference Centre - Poster sessions S-21
AVHS - Sigurdson,C.J.; Manco,G.; Schwarz,P.; Liberski,P.; Hoover,E.A.; Hornemann,S.; Polymenidou,M.; Miller,M.W.; Glatzel,M.; Aguzzi,A. - Strain fidelity of chronic wasting disease upon murine adaptation - Journal of Virology 2006 Dec; 80(24): 12303-11
ATRO - Sigurdson,C.J.; Heikenwälder,M.; Manco,G.; Hornemann,S.; Liberski,P.; Pahnke,J.; Baumann,F.; Miele,G.; Wüthrich,K.; Aguzzi,A. - Spongiform encephalopathy and prion plaque generation by mouse transgenesis - International Conference - Prion 2005: Between fundamentals and society's needs - 19.10.-21.10.2005, Congress Center Düsseldorf - Poster Session: Structure of PrP and molecular determinants of infectivity STRCT-30
AAYY - Barcikowska,M.; Kwiecinski,H.; Liberski,P.P.; Kowalski,J.; Brown,P.; Gajdusek,D.C. - Creutzfeldt-Jakob disease with Alzheimer-type A beta-reactive amyloid plaques - Histopathology 1995 May; 26(5): 445-50
AAYZ - Barcikowska,M.; Liberski,P.P.; Boellaard,J.W.; Brown,P.; Gajdusek,D.C.; Budka,H. - Microglia is a component of the prion protein amyloid plaque in the Gerstmann-Sträussler-Scheinker syndrome - Acta Neuropathologica 1993; 85(6): 623-7
AAZA - Barcikowska,M.; Mirecka,B.; Papierz,W.; Bogucki,M.; Niewodniczy,A.; Liberski,P.P. - [A case of Alzheimer's disease simulating Creutzfeldt-Jakob disease.] - Przypadek choroby Alzheimera imitujacy chorobe Creutzfeldta-Jakoba - Neurologia i Neurochirurgia Polska 1992 Sep-Oct; 26(5): 703-10
ABII - Biernat,W.; Liberski,P.P.; Guiroy,D.C.; Yanagihara,R.; Gajdusek,D.C. - Proliferating cell nuclear antigen immunohistochemistry in astrocytes in experimental Creutzfeldt-Jakob disease and in human kuru, Creutzfeldt-Jakob disease and Gerstmann-Sträussler-Scheinker syndrome - Neurodegeneration. A Journal for neurodegenerative Disorders, Neuroprotection, and Neuroregeneration 1995 Jun; 4(2): 195-201
AUUQ - Bradley,R.; Collee,J.G.; Liberski,P.P. - Variant CJD (vCJD) and bovine spongiform encephalopathy (BSE): 10 and 20 years on: part 1. - Folia Neuropathologica 2006; 44(2): 93-101
AQZT - Bradley,R.; Liberski,P.P. - Bovine spongiform encephalopathy (BSE): the end of the beginning or the beginning of the end? - Folia Neuropathologica 2004; 42 Suppl A: 55-68
AWRM - Bratosiewicz-Wasik,J.; Liberski,P.P.; Golanska,E.; Jansen,G.H.; Wasik,T.J. - Regulatory sequences of the PRNP gene influence susceptibility to sporadic Creutzfeldt-Jakob disease - Neuroscience Letters 2007 Jan 16; 411(3): 163-7
AQZU - Bratosiewicz-Wasik,J.; Wasik,T.J.; Liberski,P.P. - Molecular approaches to mechanisms of prion diseases - Folia Neuropathologica 2004; 42 Suppl A: 33-46
ABQF - Bratosiewicz-Wasik,J.; Wasik,T.J.; Liberski,P.P. - Codon 219 in Creutzfeldt-Jakob disease in Poland - Acta Neurobiologiae Experimentalis 2002; 62(3): 149-51
ABQB - Bratosiewicz,J.; Liberski,P.P. - [Prions, epidemic of Creutzfeldt-Jakob variant disease and global emergency] - Priony, epidemia wariantu choroby Creutzfeldta-Jakoba i zagrozenie globalne - Neurologia i Neurochirurgia Polska 2001; 35(4 Suppl): 25-44
ABQC - Bratosiewicz,J.; Liberski,P.P.; Kulczycki,J.; Kordek,R. - Codon 129 polymorphism of the PRNP gene in normal Polish population and in Creutzfeldt-Jakob disease, and the search for new mutations in PRNP gene - Acta Neurobiologiae Experimentalis 2001; 61(3): 151-6
ABQD - Bratosiewicz,J.; Barcikowska,M.; Cervenakova,L.; Brown,P.; Gajdusek,D.C.; Liberski,P.P. - A new point mutation of the PRNP gene in Gerstmann-Sträussler-Scheinker case in Poland - Folia Neuropathologica 2000; 38(4): 164-6
ABQE - Bratosiewicz,J.; Kordek,R.; Kulczycki,J.; Botts,G.T.; Liberski,P.P. - Molecular analysis of PRNP gene in Polish population and in Creutzfeldt-Jakob disease - Folia Neuropathologica 1999; 37(4): 277-80
ABVP - Brown,P.; Liberski,P.P.; Wolff,A.; Gajdusek,D.C. - Conservation of infectivity in purified fibrillary extracts of scrapie-infected hamster brain after sequential enzymatic digestion or polyacrylamide gel electrophoresis - Proceedings of the National Academy of Sciences of the United States of America 1990 Sep; 87(18): 7240-4
ABVR - Brown,P.; Liberski,P.P.; Wolff,A.; Gajdusek,D.C. - Resistance of scrapie infectivity to steam autoclaving after formaldehyde fixation and limited survival after ashing at 360°C: Practical and theoretical implications. - Journal of Infectious Diseases 1990 Mar; 161(3): 467-72
AUUR - Collee,J.G.; Bradley,R.; Liberski,P.P. - Variant CJD (vCJD) and bovine spongiform encephalopathy (BSE): 10 and 20 years on: part 2. - Folia Neuropathologica 2006; 44(2): 102-10
AXMX - Gebski,P.; Sikorska,B.; Rieske,P.; Janczar,S.; Liberski,P.P. - Normal Prion Protein in Human Placenta - International Conference - Prion 2007 (26.-28.9.2007) Edinburgh International Conference Centre, Edinburgh, Scotland, UK - Book of Abstracts: Pathology and Pathogenesis P03.174
ATSC - Gelpi,E.; Kovacs,G.G.; Ströbel,T.; Koperek,O.; Voigtländer,T.; Liberski,P.P.; Budka,H. - Prion disease with a 144 base pair insertion: unusual cerebellar prion protein immunoreactivity. - Acta Neuropathologica 2005 Nov; 110(5): 513-9
AEOG - Gibson,P.H.; Liberski,P.P. - An electron and light microscopic study of the numbers of dystrophic neurites and vacuoles in the hippocampus of mice infected intracerebrally with scrapie - Acta Neuropathologica 1987; 73(4): 379-82
ARAI - Golaniska,E.; Flirski,M.; Liberski,P.P. - Doppel: the prion's double. - Folia Neuropathologica 2004; 42 Suppl A: 47-54
AUAI - Golanska,E.; Hulas-Bigoszewska,K.; Sikorska,B.; Liberski,P.P. - [Analyses of 14-3-3 protein in the cerebrospinal fluid in Creutzfeldt-Jakob disease. Preliminary report] - Badania bialka 14-3-3 w plynie mozgowo-rdzeniowym w chorobie Creutzfeldta-Jakoba. Doniesienie wstepne. - Neurologia i Neurochirurgia Polska 2005 Sep-Oct; 39(5): 358-65
APUQ - Golanska,E.; Hulas-Bigoszewska,K.; Rutkiewicz,E.; Styczynska,M.; Peplonska,B.; Barcikowska,M.; Bratosiewicz-Wasik,J.; Liberski,P.P. - Polymorphisms within the prion (PrP) and prion-like protein (Doppel) genes in AD - Neurology 2004 Jan 27; 62(2): 313-5
AOTH - Golanska,E.; Hulas-Bigoszewska,K.; Styczynska,M.; Peplonska,B.; Bratosiewicz-Wasik,J.; Liberski,P.P. - Polymorphisms within the prion (PrP) and prion-like protein (Doppel) genes in AD - International Conference - Prion diseases: from basic research to intervention concepts - TSE-Forum, 08.10.-10.10.2003, Gasteig, München - Poster session - DG-12
AEUM - Grams,A.; Liberski,P.P.; Sobow,T.; Napieralska,M.; Zubert,M.; Napieralski,A. - The morphometric analysis and recognition an amyloid plaque in microscope images by computer image processing - Folia Neuropathologica 2000; 38(4): 183-7
AEYA - Guentchev,M.; Groschup,M.H.; Kordek,R.; Liberski,P.P.; Budka,H. - Severe, early and selective loss of a subpopulation of GABAergic inhibitory neurons in experimental transmissible spongiform encephalopathies - Brain Pathology 1998 Oct; 8(4): 615-23
AEYI - Guiroy,D.C.; Wakayama,I.; Liberski,P.P.; Gajdusek,D.C. - Relationship of microglia and scrapie amyloid-immunoreactive plaques in kuru, Creutzfeldt-Jakob disease and Gerstmann-Sträussler syndrome - Acta Neuropathologica 1994 May; 87(5): 526-30
AEYJ - Guiroy,D.C.; Liberski,P.P.; Williams,E.S.; Gajdusek,D.C. - Electron microscopic findings in brain of Rocky Mountain elk with chronic wasting disease - Folia Neuropathologica 1994; 32(3): 171-3
AEYL - Guiroy,D.C.; Williams,E.S.; Liberski,P.P.; Wakayama,I.; Gajdusek,D.C. - Ultrastructural neuropathology of chronic wasting disease in captive mule deer - Acta Neuropathologica 1993; 85(4): 437-44
AEYP - Guiroy,D.C.; Liberski,P.P.; Alwasiak,J.; Papierz,W.; Gajdusek,D.C. - Demonstration of amyloid beta-protein in a 32-year-old man with progressive dementia - Acta Neuropathologica 1991; 82(6): 523-6
AFAM - Hainfellner,J.A.; Wanschitz,J.; Jellinger,K.A.; Liberski,P.P.; Gullotta,F.; Budka,H. - Coexistence of Alzheimer-type neuropathology in Creutzfeldt-Jakob disease - Acta Neuropathologica 1998 Aug; 96(2): 116-22
AFAO - Hainfellner,J.A.; Liberski,P.P.; Guiroy,D.C.; Cervenakova,L.; Brown,P.; Gajdusek,D.C.; Budka,H. - Pathology and immunocytochemistry of a kuru brain - Brain Pathology 1997 Jan; 7(1): 547-53
AFAS - Hainfellner,J.A.; Brantner-Inthaler,S.; Cervenakova,L.; Brown,P.; Kitamoto,T.; Tateishi,J.; Diringer,H.; Liberski,P.P.; Regele,H.; Feucht,R.; Mayr,N.; Wessely,P.; Summer,K.; Seitelberger,F.; Budka,H. - The original Gerstmann-Sträussler-Scheinker family of Austria: divergent clinicopathological phenotypes but constant PrP genotype. - Brain Pathology 1995 Jul; 5(3): 201-11
AGAJ - Jesionek-Kupnicka,D.; Kordek,R.; Buczynski,J.; Liberski,P.P. - Apoptosis in relation to neuronal loss in experimental Creutzfeldt-Jakob disease in mice - Acta Neurobiologiae Experimentalis 2001; 61(1): 13-9
AGAK - Jesionek-Kupnicka,D.; Buczynski,J.; Kordek,R.; Liberski,P.P. - Neuronal loss and apoptosis in experimental Creutzfeldt-Jakob disease in mice - Folia Neuropathologica 1999; 37(4): 283-6
AGAL - Jesionek-Kupnicka,D.; Buczynski,J.; Kordek,R.; Sobow,T.; Kloszewska,I.; Papierz,W.; Liberski,P.P. - Programmed cell death (apoptosis) in Alzheimer's disease and Creutzfeldt-Jakob disease - Folia Neuropathologica 1997; 35(4): 233-5
AGRY - Kordek,R.; Hainfellner,J.A.; Liberski,P.P.; Budka,H. - Deposition of the prion protein (PrP) during the evolution of experimental Creutzfeldt-Jakob disease - Acta Neuropathologica 1999 Dec; 98(6): 597-602
AGRZ - Kordek,R.; Liberski,P.P.; Yanagihara,R.; Isaacson,S.; Gajdusek,D.C. - Molecular analysis of prion protein (PrP) and glial fibrillary acidic protein (GFAP) transcripts in experimental Creutzfeldt-Jakob disease in mice - Acta Neurobiologiae Experimentalis 1997; 57(2): 85-90
AGSA - Kordek,R.; Nerurkar,V.R.; Liberski,P.P.; Isaacson,S.; Yanagihara,R.; Gajdusek,D.C. - Heightened expression of tumor necrosis factor alpha, interleukin 1 alpha, and glial fibrillary acidic protein in experimental Creutzfeldt-Jakob disease in mice - Proceedings of the National Academy of Sciences of the United States of America 1996 Sep 3; 93(18): 9754-8
AGTW - Kozubski,W.; Wender,M.; Szczech,J.; Lenart-Jankowska,D.; Liberski,P.P. - Atypical case of sporadic Creutzfeldt-Jakob disease (CJD) in a young adult - Folia Neuropathologica 1998; 36(4): 225-8
AXRK - Liberski,P.P.; Sikorska,B.; Hauw,J.J.; Kopp,N.; Streichenberger,N.; Giraud,P.; Budka,H.; Boellaard,J.W.; Brown,P. - Tubulovesicular Structures are a Consistent (and Unexplained) Finding in the Brains of Humans with Prion Diseases - International Conference - Prion 2007 (26.-28.9.2007) Edinburgh International Conference Centre, Edinburgh, Scotland, UK - Book of Abstracts: Pathology and Pathogenesis P03.135
AYCF - Liberski,P.P.; Brown,P. - Disease-specific particles without prion protein in prion diseases - phenomenon or epiphenomenon? - Neuropathology and Applied Neurobiology 2007 Aug; 33(4): 395-7
ATPE - Liberski,P.P.; Sikorska,B.; Kopp,N.; Hauw,J.J.; Budka,H. - Tubulovesicular Structures Are Consistently Found In Prion Diseases Including vCJD and FFI - International Conference - Prion 2005: Between fundamentals and society's needs - 19.10.-21.10.2005, Congress Center Düsseldorf - Poster Session: Pathogenesis PATH-15
ARLY - Liberski,P.P.; Streichenberger,N.; Giraud,P.; Soutrenon,M.; Meyronnet,D.; Sikorska,B.; Kopp,N. - Ultrastructural pathology of prion diseases revisited: brain biopsy studies. - Neuropathology and Applied Neurobiology 2005 Feb; 31(1): 88-96
ARRJ - Liberski,P.P.; Sikorska,B.; Bratosiewicz-Wasik,J.; Gajdusek,D.C.; Brown,P. - Neuronal cell death in transmissible spongiform encephalopathies (prion diseases) revisited: from apoptosis to autophagy. - International Journal of Biochemistry and Cell Biology 2004 Dec; 36(12): 2473-90
ARAS - Liberski,P.P.; Brown,P. - Kuru: a half-opened window onto the landscape of neurodegenerative diseases. - Folia Neuropathologica 2004; 42 Suppl A: 3-14
AVBD - Liberski,P.P.; Ironside,J.W. - An outline of the neuropathology of transmissible spongiform encephalopathies (prion diseases) - Folia Neuropathologica 2004; 42 Suppl B: 39-58
AVBE - Liberski,P.P. - Spongiform change - an electron microscopic view - Folia Neuropathologica 2004; 42 Suppl B: 59-70
AVBF - Liberski,P.P.; Brown,P. - Astrocytes in transmissible spongiform encephalopathies (prion diseases) - Folia Neuropathologica 2004; 42 Suppl B: 71-88
AVBG - Liberski,P.P.; Jeffrey,M.J. - Tubulovesicular structures - the ultrastructural hallmark for transmissible spongiform encephalopathies or prion diseases - Folia Neuropathologica 2004; 42 Suppl B: 96-108
AVBH - Liberski,P.P. - Amyloid plaques in transmissible spongiform encephalopathies (prion diseases) - Folia Neuropathologica 2004; 42 Suppl B: 109-19
AVBI - Liberski,P.P.; Budka,H. - Gerstmann-Sträussler-Scheinker disease. I. Human diseases. - Folia Neuropathologica 2004; 42 Suppl B: 120-40
AVBJ - Liberski,P.P.; Jaskolski,M.; Brown,P. - Gerstmann-Sträussler-Scheinker disease. II. An effect of GSS mutation on PRP structure. - Folia Neuropathologica 2004; 42 Suppl B: 140-52
AVBK - Liberski,P.P.; Hainfellner,J.A.; Sikorska,B.; Mori,S.; Budka,H. - Echigo-1: a panencephalopathic strain of Creutzfeldt-Jakob disease. I. neuropathological and immunohistochemical studies. - Folia Neuropathologica 2004; 42 Suppl B: 161-6
ARAR - Liberski,P.P.; Brown,P. - Prion diseases: from transmission experiments to structural biology - still searching for the cause. - Folia Neuropathologica 2004; 42 Suppl A: 15-32
AQMD - Liberski,P.P.; Sikorska,B.; Bratosiewicz-Wasik,J.; Walis,A.; Brown,P.; Brown,D.R. - Exuberant cellular reaction of the optic nerves in experimental Creutzfeldt-Jakob disease - Acta Neurobiologiae Experimentalis 2003; 63(4): 309-18
AOVV - Liberski,P.P.; Janczar,S.; Gebski,P.; Nowakowska,D.; Wilczynski,J.; Rieske,P. - Prion Protein in Human Placenta - International Conference - Prion diseases: from basic research to intervention concepts - TSE-Forum, 08.10.-10.10.2003, Gasteig, München - Poster session - BR-40
AOVW - Liberski,P.P.; Streichenberger,N.; Giraud,P.; Soutrenon,M.; Sikorska,B.; Kopp,N. - Pathology of prions revisited: a brain biopsy studies - International Conference - Prion diseases: from basic research to intervention concepts - TSE-Forum, 08.10.-10.10.2003, Gasteig, München - Poster session - DG-13
AUES - Liberski,P.P. - Introduction to the Special Issue of ANE: Prion Diseases - Acta Neurobiologiae Experimentalis 2002; 62(3): 119
AHGO - Liberski,P.P.; Bratosiewicz-Wasik,J.; Gajdusek,D.C.; Brown,P. - Ultrastructural studies of experimental scrapie and Creutzfeldt-Jakob disease in hamsters. I. Alterations of myelinated axons. - Acta Neurobiologiae Experimentalis 2002; 62(3): 121-9
AHGN - Liberski,P.P.; Bratosiewicz-Wasik,J.; Gajdusek,D.C.; Brown,P. - Ultrastructural studies of experimental scrapie and Creutzfeldt-Jakob disease in hamsters. II. Astrocytic and macrophage reaction towards axonal destruction. - Acta Neurobiologiae Experimentalis 2002; 62(3): 131-9
AHGM - Liberski,P.P.; Gajdusek,D.C.; Brown,P. - How do neurons degenerate in prion diseases or transmissible spongiform encephalopathies (TSEs): neuronal autophagy revisited. - Acta Neurobiologiae Experimentalis 2002; 62(3): 141-7
AHGL - Liberski,P.P.; Jaskolski,M. - Prion diseases: a dual view of the prion hypothesis as seen from a distance. - Acta Neurobiologiae Experimentalis 2002; 62(3): 197-224; discussion 224-6
AHGP - Liberski,P.P.; Guiroy,D.C.; Williams,E.S.; Walis,A.; Budka,H. - Deposition patterns of disease-associated prion protein in captive mule deer brains with chronic wasting disease - Acta Neuropathologica 2001 Nov; 102(5): 496-500
AHGQ - Liberski,P.P.; Bratosiewicz,J.; Walis,A.; Kordek,R.; Jeffrey,M.J.; Brown,P. - A special report I. Prion protein (PrP) - amyloid plaques in the transmissible spongiform encephalopathies, or prion diseases revisited. - Folia Neuropathologica 2001; 39(4): 217-35
AHGR - Liberski,P.P.; Bratosiewicz,J.; Walis,A.; Kordek,R.; Jeffrey,M.J.; Brown,P. - A special report I. Prion protein (Prp) - amyloid plaques in the transmissible spongiform encephalopathies (TSEs) or prion disease revisited. - Polish Journal of Pathology 2001; 52(4): 169-86
AHGS - Liberski,P.P.; Bratosiewicz,J.; Barcikowska,M.; Cervenakova,L.; Marczewska,M.; Brown,P.; Gajdusek,D.C. - A case of sporadic Creutzfeldt-Jakob disease with a Gerstmann-Sträussler-Scheinker phenotype but no alterations in the PRNP gene - Acta Neuropathologica 2000 Aug; 100(2): 233-4
AHGT - Liberski,P.P.; Jeffrey,M.J. - Tubulovesicular structures: what are they really? - Microscopy Research and Technique 2000 Jul 1; 50(1): 46-57
AHGU - Liberski,P.P.; Giraud,P.; Kopp,N. - Ultrastructural pathology of Creutzfeldt-Jakob disease and fatal familial insomnia - Folia Neuropathologica 2000; 38(4): 171-3
AHGV - Liberski,P.P.; Ironside,J.; McCardle,L.; Sherring,A. - Ultrastructural analysis of the florid plaque in variant Creutzfeldt-Jakob disease - Folia Neuropathologica 2000; 38(4): 167-70
AHGW - Liberski,P.P. - Bovine spongiform encephalopathy and variant Creutzfeldt-Jakob disease: a risk analysis. - Folia Neuropathologica 2000; 38(4): 143-50
AHGX - Liberski,P.P.; Budka,H. - Neuroaxonal pathology in Creutzfeldt-Jakob disease - Acta Neuropathologica 1999 Apr; 97(4): 329-34
AHGY - Liberski,P.P.; Barcikowska,M.; Cervenakova,L.; Bratosiewicz,J.; Marczewska,M.; Brown,P.; Gajdusek,D.C. - A case of sporadic Creutzfeldt-Jakob disease with a Gerstmann-Sträussler-Scheinker phenotype but no alterations in the PRNP gene - Acta Neuropathologica 1998 Oct; 96(4): 425-30
AHGZ - Liberski,P.P.; Mori,S. - The Echigo-1: a panencephalopathic strain of Creutzfeldt-Jakob disease: a passage to hamsters and ultrastructural studies. - Folia Neuropathologica 1997; 35(4): 250-4
AHHA - Liberski,P.P.; Brown,P.; Gajdusek,D.C. - The evolution of views on the nosological position of transmissible spongiform encephalopathies - Folia Neuropathologica 1997; 35(4): 214-25
AHHB - Liberski,P.P.; Bratosiewicz-Zapart,J. - Is the prion structure solved? - Archivum Immunologiae et Therapiae Experimentalis 1997; 45(2-3): 121-40
AHHC - Liberski,P.P. - [Nobel prize for prions] - Nagroda Nobla za priony - Postepy Biochemii 1997; 43(4): 229-30
AHHD - Liberski,P.P.; Gajdusek,D.C. - Myelinated axon undergoes complete demyelination in the panencephalopathic - but it is merely subjected to the Wallerian degeneration in the polioencephalopathic type of transmissible spongiform encephalopathies - Polish Journal of Pathology 1997; 48(3): 163-71
AHHE - Liberski,P.P.; Brown,P.; Cervenakova,L.; Gajdusek,D.C. - Interactions between astrocytes and oligodendroglia in human and experimental Creutzfeldt-Jakob disease and scrapie - Experimental Neurology 1997 Mar; 144(1): 227-34
AHHF - Liberski,P.P.; Jeffrey,M.J.; Goodsir,C.M. - Tubulovesicular structures are not labeled using antibodies to prion protein (PrP) with the immunogold electron microscopy techniques - Acta Neuropathologica 1997 Mar; 93(3): 260-4
AHHG - Liberski,P.P.; Gajdusek,D.C. - Kuru: forty years later, a historical note. - Brain Pathology 1997 Jan; 7(1): 555-60
AHHH - Liberski,P.P. - How do neurons degenerate in transmissible spongiform encephalopathies? - Molecular and Chemical Neuropathology 1996 May-Aug; 28(1-3): 245-9
AHHI - Liberski,P.P.; Yanagihara,R.; Brown,P.; Kordek,R.; Kloszewska,I.; Bratosiewicz,J.; Gajdusek,D.C. - Microwave treatment enhances the immunostaining of amyloid deposits in both the transmissible and non-transmissible brain amyloidoses - Neurodegeneration. A Journal for neurodegenerative Disorders, Neuroprotection, and Neuroregeneration 1996 Mar; 5(1): 95-9
AHHJ - Liberski,P.P.; Bratosiewicz,J. - [Transmissible cerebral amyloidoses or prion diseases: is the structure of the infectious agent really understood?] - Pasazowalne amyloidozy mozgowe czyli choroby wywolane przez priony: czy struktura czynnika scrapie jest juz rzeczywiscie znana? - Postepy Biochemii 1996; 42(4): 320-30
AHHR - Liberski,P.P. - Prions, beta-sheets and transmissible dementias: is there still something missing? - Acta Neuropathologica 1995 Aug; 90(2): 113-25
AHHK - Liberski,P.P.; Budka,H.; Yanagihara,R.; Gajdusek,D.C. - Neuroaxonal dystrophy in experimental Creutzfeldt-Jakob disease: electron microscopical and immunohistochemical demonstration of neurofilament accumulations within affected neurites. - Journal of Comparative Pathology 1995 Apr; 112(3): 243-55
AHHL - Liberski,P.P.; Nerurkar,V.R.; Yanagihara,R.; Gajdusek,D.C. - Tumor necrosis factor alpha (TNF-alpha) is involved in the pathogenesis of the panencephalopathic type of Creutzfeldt-Jakob disease - Molecular and Chemical Neuropathology 1995 Feb-Apr; 24(2-3): 223-5
AHHQ - Liberski,P.P.; Budka,H. - Ultrastructural pathology of Gerstmann-Sträussler-Scheinker disease - Ultrastructural Pathology 1995 Jan-Feb; 19(1): 23-36
AHHN - Liberski,P.P.; Barcikowska,M. - Pathology of the vessels in cerebral amyloid angiopathy - Folia Neuropathologica 1995; 33(4): 207-14
AHHM - Liberski,P.P.; Sklodowski,P.; Klimek,A. - Creutzfeldt-Jakob disease: ultrastructural study of brain biopsy: unusual interaction between astrocytes and oligo- and microglia. - Folia Neuropathologica 1995; 33(2): 85-92
AHHO - Liberski,P.P. - "Tubulofilamentous particles" are not scrapie-specific and are unrelated to tubulovesicular structures - Acta Neurobiologiae Experimentalis 1995; 55(3): 149-54
AHHP - Liberski,P.P. - Reappraisal of ultrastructural diversity of amyloid plaques in Gerstmann-Sträussler-Scheinker syndrome - Polish Journal of Pathology 1995; 46(1): 33-41
ASCK - Liberski,P.P.; Budka,H. - Tubulovesicular structures in Gerstmann-Sträussler-Scheinker disease - Acta Neuropathologica 1994 Nov; 88(5): 491-2
ASCL - Liberski,P.P.; Budka,H.; Mcrae,A. - Symposia on neurodegenerative disorders: Common molecular mechanisms, Ocho Rios, Jamaica, February 1993 and April 1994 - Amyloid - International Journal of Experimental and Clinical Investigation 1994 Sep; 1(3): 206-210
AHHS - Liberski,P.P. - Transmissible cerebral amyloidoses as a model for Alzheimer's disease. An ultrastructural perspective. - Molecular Neurobiology 1994 Feb; 8(1): 67-77
AHHT - Liberski,P.P. - Transmissible spongiform encephalopathies or prion disorders - current views - Folia Neuropathologica 1994; 32(2): 65-73
AHHU - Liberski,P.P.; Budka,H. - Tubulovesicular structures in Gerstmann-Sträussler-Scheinker disease - Acta Neuropathologica 1994; 88(5): 491-2
AHHV - Liberski,P.P.; Yanagihara,R.; Nerurkar,V.; Gajdusek,D.C. - Further ultrastructural studies of lesions produced in the optic nerve by tumor necrosis factor alpha (TNF-alpha): a comparison with experimental Creutzfeldt-Jakob disease. - Acta Neurobiologiae Experimentalis 1994; 54(3): 209-18
AHHW - Liberski,P.P. - Tubulovesicular structures (TVS): virus-like particles specific for all subacute spongiform virus encephalopathies - what are they really? - Archivum Immunologiae et Therapiae Experimentalis 1994; 42(2): 89-93
AHHX - Liberski,P.P. - Subacute spongiform encephalopathies - the transmissible brain amyloidoses: a comparison with the non-transmissible brain amyloidoses of Alzheimer type. - Journal of Comparative Pathology 1993 Aug; 109(2): 103-27
AHHY - Liberski,P.P. - [Transmissible and non-transmissible brain amyloidoses: neurodegenerative disorders of different etiologies and the same pathogenesis] - Pasazowalne i niepasazowalne amyloidozy mozgowe: choroby o roznej etiologii i tej samej patogenezie. - Patologia Polska 1993; 44(1): 19-30
AHIB - Liberski,P.P.; Yanagihara,R.; Wells,G.A.H.; Gajdusek,D.C. - Bovine spongiform encephalopathy in cattle mimics ultrastructurally experimental scrapie and Creutzfeldt-Jakob disease in rodents - Neuropatologia Polska 1993; 31(1-2): 1-16
AHHZ - Liberski,P.P. - The enigma of slow viruses. Facts and artefacts. - Archives of Virology. Supplementum 1993; 6: 1-263
AHIA - Liberski,P.P. - The transmissible brain amyloidoses: a comparison with the non transmissible brain amyloidoses of Alzheimer type. - Acta Neurobiologiae Experimentalis 1993; 53(1): 337-49
AHID - Liberski,P.P.; Yanagihara,R.; Wells,G.A.H.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Comparative ultrastructural neuropathology of naturally occurring bovine spongiform encephalopathy and experimentally induced scrapie and Creutzfeldt-Jakob disease - Journal of Comparative Pathology 1992 May; 106(4): 361-81
AHIC - Liberski,P.P.; Yanagihara,R.; Wells,G.A.H.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Ultrastructural pathology of axons and myelin in experimental scrapie in hamsters and bovine spongiform encephalopathy in cattle and a comparison with the panencephalopathic type of Creutzfeldt-Jakob disease - Journal of Comparative Pathology 1992 May; 106(4): 383-98
AHIE - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Neuronal autophagic vacuoles in experimental scrapie and Creutzfeldt-Jakob disease - Acta Neuropathologica 1992; 83(2): 134-9
AHIG - Liberski,P.P.; Budka,H.; Sluga,E.; Barcikowska,M.; Kwiecinski,H. - Tubulovesicular structures in Creutzfeldt-Jakob disease - Acta Neuropathologica 1992; 84(3): 238-43
AHIF - Liberski,P.P.; Mirecka,B.; Alwasiak,J.; Yanagihara,R.; Gajdusek,D.C. - Expression of tumor necrosis factor-alpha cachectin in primary brain tumors of astrocytic lineage - Neuropatologia Polska 1992; 30(1): 35-42
AHIH - Liberski,P.P. - [Creutzfeldt-Jakob syndrome - a disease of viral etiology and genetic pathogenesis: transmitted cerebral amyloidosis induced by viral infection] - Choroba Creutzfeldta-Jakoba - choroba o wirusowej etiologii i genetycznej patogenezie: transmisyjna amyloidoza mozgowa indukowana przez infekcje wirusowa. - Neurologia i Neurochirurgia Polska 1991 Nov-Dec; 25(6): 775-80
AHII - Liberski,P.P.; Brown,P.; Xiao,S.Y.; Gajdusek,D.C. - The ultrastructural diversity of scrapie-associated fibrils isolated from experimental scrapie and Creutzfeldt-Jakob disease - Journal of Comparative Pathology 1991 Nov; 105(4): 377-86
AHIL - Liberski,P.P.; Kwiecinski,H.; Barcikowska,M.; Mirecka,B.; Kulczycki,J.; Kida,E.; Brown,P.; Gajdusek,D.C. - PrP amyloid plaques in Creutzfeldt-Jakob disease of short duration: immunohistochemical studies of 5 cases from Poland. - European Journal of Epidemiology 1991 Sep; 7(5): 505-10
AHIJ - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Mechanism of the damage to myelinated axons in experimental Creutzfeldt-Jakob disease in mice: an ultrastructural study. - European Journal of Epidemiology 1991 Sep; 7(5): 545-50
AHIK - Liberski,P.P.; Budka,H.; Sluga,E.; Barcikowska,M.; Kwiecinski,H. - Tubulovesicular structures in human and experimental Creutzfeldt-Jakob disease - European Journal of Epidemiology 1991 Sep; 7(5): 551-5
AHIM - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Experimental Creutzfeldt-Jakob disease: light microscopic, immunohistochemical and ultrastructural studies of the Fujisaki strain of Creutzfeldt-Jakob disease virus in NIH Swiss mice. - Neuropatologia Polska 1991; 29(1-2): 1-17
AHIN - Liberski,P.P.; Kwiecinski,H.; Barcikowska,M.; Mirecka,B.; Kulczycki,J.; Kida,E.; Brown,P.; Gajdusek,D.C. - Creutzfeldt-Jakob disease (CJD) of a short duration with prion protein (PrP) plaques - Patologia Polska 1991; 42(4): 115-8
ANIY - Liberski,P.P. - Ultrastructural neuropathologic features of bovine spongiform encephalopathy - Journal of the American Veterinary Medical Association 1990 May 15; 196(10): 1682
AHIO - Liberski,P.P.; Yanagihara,R.; Asher,D.M.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Reevaluation of the ultrastructural pathology of experimental Creutzfeldt-Jakob disease. Serial studies of the Fujisaki strain of Creutzfeldt-Jakob disease virus in mice. - Brain: A Journal of Neurology 1990 Feb; 113(1): 121-37
AHIP - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Spread of Creutzfeldt-Jakob disease virus along visual pathways after intraocular inoculation - Archives of Virology 1990; 111(1-2): 141-7
AHIQ - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Appearance of tubulovesicular structures in experimental Creutzfeldt-Jakob disease and scrapie precedes the onset of clinical disease - Acta Neuropathologica 1990; 79(4): 349-54
AHIR - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Scrapie as a model for neuroaxonal dystrophy: ultrastructural studies. - Experimental Neurology 1989 Nov; 106(2): 133-41
AHIS - Liberski,P.P.; Asher,D.M.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Serial ultrastructural studies of scrapie in hamsters - Journal of Comparative Pathology 1989 Nov; 101(4): 429-42
AHIT - Liberski,P.P.; Plucienniczak,A.; Hrabec,E.; Bogucki,A. - Isolation and purification of scrapie-associated fibrils and prion protein from scrapie-infected hamster brain - Journal of Comparative Pathology 1989 Feb; 100(2): 177-85
AHIU - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Neuroaxonal dystrophy: an ultrastructural link between subacute spongiform virus encephalopathies and Alzheimer's disease. - Progress in Clinical and Biological Research 1989; 317: 549-57
AHIV - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - White matter ultrastructural pathology of experimental Creutzfeldt-Jakob disease in mice - Acta Neuropathologica 1989; 79(1): 1-9
AHIW - Liberski,P.P.; Plucienniczak,A.; Hrabec,E.; Bogucki,A. - Ultrastructural studies of scrapie-associated fibrils and prion protein from hamster brains infected with scrapie - Folia Histochemica et Cytobiologica 1989; 27(1): 3-9
AHIX - Liberski,P.P. - The occurrence of cytoplasmic lamellar bodies in scrapie-infected and normal hamster brains - Neuropatologia Polska 1988; 26(1): 79-85
AHIY - Liberski,P.P.; Yanagihara,R.; Gibbs,C.J.Jr.; Gajdusek,D.C. - Tubulovesicular structures in experimental Creutzfeldt-Jakob disease and scrapie - Intervirology 1988; 29(2): 115-9
AHIZ - Liberski,P.P.; Papierz,W.; Alwasiak,J. - Creutzfeldt-Jakob disease with plaques and paired helical filaments - Acta Neurologica Scandinavica 1987 Dec; 76(6): 428-32
AHJA - Liberski,P.P. - [Scrapie agent] - Czynnik zakazny scrapie - Polski Tygodnik Lekarski 1987 Aug 31; 42(35): 1095-6
AHJB - Liberski,P.P.; Gibson,P.H. - Cerebellar lamellar bodies in two strains of murine scrapie - Journal of Comparative Pathology 1987 Jul; 97(4): 491-3
AHJF - Liberski,P.P. - [Biology of the infectious scrapie agent] - Biologia czynnika infekcyjnego scrapie - Postepy Higieny I Medycyny Doswiadczalnej 1987 Jan-Feb; 41(1): 54-73
AHJD - Liberski,P.P. - Electron microscopic observations on dystrophic neurites in hamster brains infected with the 263K strain of scrapie - Journal of Comparative Pathology 1987 Jan; 97(1): 35-9
AHJC - Liberski,P.P. - Astrocytic reaction in experimental scrapie in hamsters - Journal of Comparative Pathology 1987 Jan; 97(1): 73-8
AHJE - Liberski,P.P. - The brain fine structure in experimental scrapie. The 263K strain in golden Syrian hamsters. - Neuropatologia Polska 1987; 25(1): 35-51
AHJG - Liberski,P.P. - The nature of spiroplasma-like inclusions in experimental scrapie - Neuropatologia Polska 1987; 25(1): 53-7
AHJK - Liberski,P.P. - [Transmissible spongiform encephalopathy. Natural diseases and experimental studies] - Przekazywalna encefalopatia gabczasta. Choroby naturalne i badania eksperymentalne. - Neuropatologia Polska 1986; 24(4): 431-41
AHJH - Liberski,P.P. - [Virion or prion? Second thoughts on the physicochemical structure of the infective agent in scrapie] - Wirino czy prion? Druga refleksja nad struktura fizykochemiczna czynnika infekcyjnego scrapie - Neurologia i Neurochirurgia Polska 1986 Jul-Aug; 20(4): 354-9
AHJI - Liberski,P.P. - Gliocytosis in experimental scrapie (263K strain of scrapie) in golden Syrian hamsters - Neuropatologia Polska 1986; 24(2): 221-30
AHJL - Liberski,P.P. - [The structure of the infectious scrapie agent] - Struktura czynnika infekcyjnego scrapie - Postepy Biochemii 1986; 32(1-2): 203-23
AHJJ - Liberski,P.P. - Degenerative neurites in experimental scrapie - Neuropatologia Polska 1986; 24(1): 79-88
AHJO - Liberski,P.P.; Papierz,W.; Alwasiak,J. - Brain fine structure in Creutzfeldt-Jakob disease with plaques and tangles. I. Neuritic plaques. - Neuropatologia Polska 1985; 23(4): 507-19
AHJN - Liberski,P.P.; Alwasiak,J.; Papierz,W. - Brain fine structure in Creutzfeldt-Jakob disease with plaques and tangles. II. Neurofibrillary tangles composed of paired helical filaments. - Neuropatologia Polska 1985; 23(4): 521-9
AHJM - Liberski,P.P.; Prusinski,A. - [Subviral infections] - O infekcjach subwirusowych - Wiadomosci Lekarskie 1985 Mar 15; 38(6): 421-6
AHJP - Liberski,P.P. - [Virion or prion? Reflections on the physicochemical structure of the scrapie agent] - Virion czy prion? Refleksje nad struktura fizykochemiczna czynnika scrapie - Neurologia i Neurochirurgia Polska 1984 Jan-Feb; 18(1): 51-6
AHJR - Liberski,P.P.; Alwasiak,J. - Neuropathology of experimental transmissible spongiform encephalopathy (263 K strain of scrapie in golden Syrian hamsters). I. Standard pathology and development of lesions. - Neuropatologia Polska 1983; 21(3): 377-92
AHJQ - Liberski,P.P. - [Slow viruses of the nervous system in man and animal. III. Creutzfeldt-Jakob syndrome] - Wirusy powolne ukladu nerwowego czlowieka i zwierzat. III. Choroba Creutzfeldta-Jakoba. - Postepy Higieny I Medycyny Doswiadczalnej 1983 Mar-Apr; 37(2): 141-75
AHJS - Liberski,P.P. - [Slow viruses of the human nervous system. II. Scrapie] - Wirusy powolne okladu nerwowego czlowieka. II. Scrapie. - Postepy Higieny I Medycyny Doswiadczalnej 1982; 36(1-3): 133-70
AHJT - Liberski,P.P. - [Slow viruses of the human nervous system. I. Kuru] - Wirusy powolne ukladu nerwowego czlowieka. I. Kuru. - Postepy Higieny I Medycyny Doswiadczalnej 1981 Sep-Oct; 35(5): 471-93
ATWA - Nawrocka-Kunecka,A.; Papierz,W.; Liberski,P.P. - Complement factors C1q and C3b in brains with Creutzfeldt-Jakob disease - Polish Journal of Pathology 2005; 56(3): 127-9
AKHW - Safar,J.G.; Ceroni,M.; Piccardo,P.; Liberski,P.P.; Miyazaki,M.; Gajdusek,D.C.; Gibbs,C.J.Jr. - Subcellular distribution and physicochemical properties of scrapie-associated precursor protein and relationship with scrapie agent - Neurology 1990 Mar; 40(3 Pt 1): 503-8
AXWI - Sikorska,B.; Liberski,P.P.; Budka,H.; Ironside,J.W. - Ultrastructural Study of Florid Plaques in vCJD: A Comparison with Kuru Plaques in sCJD and Multicentric Plaques of GSS - International Conference - Prion 2007 (26.-28.9.2007) Edinburgh International Conference Centre, Edinburgh, Scotland, UK - Book of Abstracts: Pathology and Pathogenesis P03.16
AWNQ - Sikorska,B.; Liberski,P.P.; Giraud,P.; Kopp,N.; Brown,P. - Autophagy is a common ultrastructural feature of transmissible spongiform encephalopathies - International Conference - Prion 2006: Strategies, advances and trends towards protection of society - 3.10.-6.10.2006, Torino, Italy, Lingotto Conference Centre - Poster sessions PA-51
ATPD - Sikorska,B.; Liberski,P.P.; Brown,P.W. - Dystrophic Neurites In Scrapie-Affected Brains Are Removed By Autophagy; An Ultrastructural Study - International Conference - Prion 2005: Between fundamentals and society's needs - 19.10.-21.10.2005, Congress Center Düsseldorf - Poster Session: Pathogenesis PATH-14
ARTK - Sikorska,B.; Liberski,P.P.; Giraud,P.; Kopp,N.; Brown,P. - Autophagy is a part of ultrastructural synaptic pathology in Creutzfeldt-Jakob disease: a brain biopsy study. - International Journal of Biochemistry and Cell Biology 2004 Dec; 36(12): 2563-73
AVBW - Sikorska,B.; Hainfellner,J.A.; Mori,S.; Bratosiewiczi,J.; Liberski,P.P.; Budka,H. - Echigo-1: a panencephalopathic strain of Creutzfeldt-Jakob disease. II. Ultrastructural studies in hamsters. - Folia Neuropathologica 2004; 42 Suppl B: 167-75
AQWN - Sikorska,B.; Walis,A.; Bratosiewicz-Wasik,J.; Brown,P.; Liberski,P.P. - Fate of myelinated fibres in the optic nerves in experimental Creutzfeldt-Jakob disease in rodents: an ultrastructural study. - Folia Neuropathologica 2004; 42(2): 101-5
AKZU - Sobow,T.; Kloszewska,I.; Liberski,P.P. - [Amyloid plaque in selected neurodegenerative disorders of the central nervous system] - Plytka amyloidowa w niektorych chorobach zwyrodnieniowych osrodkowego ukladu nerwowego - Psychiatria Polska 1994 Nov-Dec; 28(6): 759-72
ALBY - Split,W.; Janusik,J.; Alwasiak,J.; Papierz,W.; Barcikowska,M.; Liberski,P.P. - Creutzfeldt-Jakob disease with tubulovesicular structures: an ultrastructural study. - Neuropatologia Polska 1992; 30(3-4): 295-305
AVCB - Walis,A.; Liberski,P.P.; Brown,P. - Ultrastructural alterations in the optic nerve in transmissible spongiform encephalopathies or prion diseases - a review - Folia Neuropathologica 2004; 42 Suppl B: 153-60
APMZ - Walis,A.; Bratosiewicz,J.; Sikorska,B.; Brown,P.; Gajdusek,D.C.; Liberski,P.P. - Ultrastructural changes in the optic nerves of rodents with experimental Creutzfeldt-Jakob Disease (CJD), Gerstmann-Sträussler-Scheinker disease (GSS) or scrapie - Journal of Comparative Pathology 2003 Aug-Oct; 129(2-3): 213-25
AMEB - Walis,A.; Liberski,P.P. - Echigo-1: a panencephalopathic strain of Creutzfeldt-Jakob disease: ultrastructural studies of the optic nerve. - Folia Neuropathologica 1999; 37(4): 281-2
AMEC - Walis,A.; Liberski,P.P.; Brown,P.; Gajdusek,D.C. - Electron microscopic studies of the optic nerve in experimental scrapie and the panencephalopathic type of Creutzfeldt-Jakob disease - Folia Neuropathologica 1997; 35(4): 255-8
AWQQ - Witusik,M.; Hulas-Bigoszewska,K.; Krynska,B.; Azii,S.A.; Liberski,P.P.; Rieske,P. - The role of PrPc protein in neural differentiation of NSCs into neuronal and glial line - International Conference - Prion 2006: Strategies, advances and trends towards protection of society - 3.10.-6.10.2006, Torino, Italy, Lingotto Conference Centre - Poster sessions CE-54
ATGW - Witusik,M.; Hulas-Bigoszewska,K.; Zawlik,I.; Golanska,E.; Piaskowski,S.; Szybka,M.; Liberski,P.P.; Rieske,P. - Neuronal differentiation of PC12 cells is defected by siRNA molecules inhibiting expression of Doppel protein - International Conference - Prion 2005: Between fundamentals and society's needs - 19.10.-21.10.2005, Congress Center Düsseldorf - Poster Session: Cell Biology of PrPc and PrPsc CELL-02
AUGH - Wojtera,M.; Sikorska,B.; Sobow,T.; Liberski,P.P. - Microglial cells in neurodegenerative disorders - Folia Neuropathologica 2005; 43(4): 311-21
AOBC - Zaborowski,A.; Kordek,R.; Botts,G.T.; Liberski,P.P. - Immunohistochemical investigations of the prion protein accumulation in human spongiform encephalopathies. Special report II. - Polish Journal of Pathology 2003; 54(1): 39-47
AVAD - Zawlik,I.; Witusik,M.; Hulas-Bigoszewska,K.; Piaskowski,S.; Szybka,M.; Golanska,E.; Liberski,P.P.; Rieske,P. - Regulation of PrPc expression: nerve growth factor (NGF) activates the prion gene promoter through the MEK1 pathway in PC12 cells. - Neuroscience Letters 2006 May 29; 400(1-2): 58-62
ATIS - Zawlik,I.; Witusik,M.; Hulas-Bigoszewska,K.; Piaskowski,S.; Szybka,M.; Golanska,E.; Liberski,P.P.; Rieske,P. - The Prnp expression in PC-12 cells during differentiation - International Conference - Prion 2005: Between fundamentals and society's needs - 19.10.-21.10.2005, Congress Center Düsseldorf - Poster Session: Cell Biology of PrPc and PrPsc CELL-50