title: An attenuated strain of Western equine encephalitis virus as a possible live immunizing agent.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D006224:Cricetinae; D004668:Encephalitis Viruses; D004683:Encephalomyelitis, Equine / Q000517:prevention & control*; D006168:Guinea Pigs; D000882:Haplorhini; D066298:In Vitro Techniques; D051379:Mice; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines