title: Maedi-visna in Canadian sheep.
abstract: Lesions of maedi-visna were seen in sheep from the institutional research flock of the Animal Research Institute, Research Branch, Agriculture Canada in Ottawa. Viral particles demonstrated by electron microscopy in tissue culture cells and serological results confirm the diagnosis of maedi-visna. The extent of the problem in this flock will be described in a future paper.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D008854:Microscopy, Electron; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000097:blood / Q000382:microbiology / Q000473:pathology*; D012756:Sheep; D014790:Visna-maedi virus / Q000302:isolation & purification / Q000648:ultrastructure