title: Transmission of equine infectious anaemia virus from a horse negative to agar gel immunodiffusion testing.
mesh_terms: D000818:Animals; D004859:Equine Infectious Anemia / Q000276:immunology / Q000635:transmission*; D006736:Horses; D005779:Immunodiffusion; D004860:Infectious Anemia Virus, Equine / Q000276:immunology*; D008297:Male