title: BK virus and non-haemorrhagic cystitis in a child.
mesh_terms: D000208:Acute Disease; D000818:Animals; D001739:BK Virus / Q000648:ultrastructure; D002675:Child, Preschool; D003556:Cystitis / Q000209:etiology* / Q000382:microbiology; D006801:Humans; D008297:Male; D011120:Polyomavirus / Q000648:ultrastructure; D014412:Tumor Virus Infections; D014556:Urine / Q000382:microbiology*; D014771:Virion / Q000648:ultrastructure