title: Studies on transmission of maedi virus to lambs.
mesh_terms: D000818:Animals; D005260:Female; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000276:immunology / Q000382:microbiology / Q000635:transmission*; D011247:Pregnancy; D012756:Sheep; D014790:Visna-maedi virus / Q000302:isolation & purification