title: Variability of Western equine encephalomyelitis virus. I. Genetic markers of virus variants obtained by formaldehyde treatment and ultraviolet irradiation.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D003588:Cytopathogenic Effect, Viral; D004668:Encephalitis Viruses / Q000187:drug effects* / Q000472:pathogenicity / Q000528:radiation effects*; D005557:Formaldehyde / Q000494:pharmacology; D005823:Genetics; D051379:Mice; D011479:Protamines / Q000494:pharmacology; D014466:Ultraviolet Rays
chemical_list: D011479:Protamines; D005557:Formaldehyde