title: A field trial of a live-virus western encephalitis vaccine.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D003126:Colostrum; D004683:Encephalomyelitis, Equine / Q000517:prevention & control*; D005260:Female; D010527:Perissodactyla; D011247:Pregnancy; D011270:Pregnancy, Animal; D014611:Vaccination / Q000662:veterinary; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines