title: Visceral leishmaniasis as an opportunistic infection.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000150:complications / Q000276:immunology; D000328:Adult; D006801:Humans; D007108:Immune Tolerance; D007893:Leishmania donovani / Q000302:isolation & purification; D007898:Leishmaniasis, Visceral / Q000276:immunology* / Q000469:parasitology; D008297:Male