aids alpha helix amino acid amyloid astrogliosis ataxia autoclave base pair beta sheet biochemistry bone marrow bovine spongiform encephalopathy brain cat cattle cell membrane central dogma of molecular biology central nervous system chronic wasting disease conformation convulsion copper creutzfeldt-jakob disease dartmouth college david baltimore dementia digital object identifier direct dna damage disulfide bond elk evolution fatal familial insomnia feline spongiform encephalopathy francis crick fungal prions fungus gene genetically modified organism glycolipid glycophosphatidylinositol goat hiv heat hematopoietic stem cell heredity hippocampus icd iatrogenesis in vitro incubation period infectious disease inflammation ion laura manuelidis long-term potentiation mammal membrane topology mink molecule mule deer mutation nobel prize in physiology or medicine nuclease nucleic acid nyala oryx ostrich prnp pathogen phospholipase c polydisperse portmanteau prp structure preon protease protein protein folding protein structure proteinase k proteopathy rna virus radiation reed wickner reproduction reverse transcription richard rhodes scrapie susan lindquist tertiary structure transmissible mink encephalopathy transmissible spongiform encephalopathy ultraviolet vacuole virus whitehead institute wikimedia commons world health organization yale university