The effect of post-infection immunization on the severity of experimental visna.
D000818:Animals; D000956:Antigens, Viral / Q000276:immunology; D002493:Central Nervous System Diseases / Q000473:pathology / Q000662:veterinary; D005260:Female; D007114:Immunization / Q000662:veterinary*; D008297:Male; D012192:Retroviridae Infections / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology* / Q000473:pathology; D014790:Visna-maedi virus / Q000276:immunology
D000956:Antigens, Viral