title: Plaque size and virulence of attenuated Venezuelan equine encephalomyelitis virus after passage in various hosts.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D004666:Encephalitis Virus, Venezuelan Equine / Q000254:growth & development / Q000276:immunology; D004668:Encephalitis Viruses / Q000254:growth & development*; D005260:Female; D006462:Hemolytic Plaque Technique; D007739:L Cells; D051379:Mice; D011247:Pregnancy; D013045:Species Specificity; D014774:Virulence; D014776:Virus Cultivation