title: Studies on equine viral arteritis. II. A serological survey of equine viral arteritis in horses imported in 1973/74.
mesh_terms: D000818:Animals; D007240:Equartevirus / Q000276:immunology*; D006734:Horse Diseases / Q000276:immunology*; D006736:Horses; D009976:Orthomyxoviridae Infections / Q000276:immunology / Q000662:veterinary*; D012328:RNA Viruses / Q000276:immunology*