title: AIDS and maedi-visna: parallels and divergences.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology*; D000818:Animals; D006678:HIV / Q000502:physiology*; D006801:Humans; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000382:microbiology*; D012756:Sheep; D014790:Visna-maedi virus / Q000502:physiology*