AXDO - Nitschke,C.; Flechsig,E.; van den Brandt,J.; Lindner,N.; Lührs,T.; Dittmer,U.; Klein,M.A. - Immunisation strategies against prion diseases: prime-boost immunisation with a PrP DNA vaccine containing foreign helper T-cell epitopes does not prevent mouse scrapie. - Veterinary Microbiology 2007 Aug 31; 123(4): 367-76