Current Review: Infectious and Genetic Manifestations of Prion Diseases. Stanley B. Prusiner. Departments of Neurology and of Biochemistry and Biophysics, University of California, San Francisco 94143 U.S.A. David Westaway. Departments of Neurology and of Biochemistry and Biophysics, University of California, San Francisco 94143 U.S.A. MPMI 4:226-233. Accepted 25 February 1991. Copyright 1991 The American Phytopathological Society.