title: Comments on biologic requirements and control of equine rhinopneumonitis vaccine.
mesh_terms: D000034:Abortion, Veterinary / Q000517:prevention & control*; D000818:Animals; D005260:Female; D006564:Herpesviridae; D006566:Herpesviridae Infections / Q000662:veterinary*; D006734:Horse Diseases / Q000517:prevention & control*; D006736:Horses; D011247:Pregnancy; D014765:Viral Vaccines / Q000592:standards*
chemical_list: D014765:Viral Vaccines