title: Mechanisms of escape of visna lentiviruses from immunological control.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000276:immunology*; D006041:Goats; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000276:immunology / Q000382:microbiology; D012190:Retroviridae / Q000235:genetics / Q000254:growth & development / Q000276:immunology; D012756:Sheep; D014779:Virus Replication; D014790:Visna-maedi virus / Q000235:genetics / Q000254:growth & development / Q000276:immunology*
chemical_list: D000956:Antigens, Viral