title: BK virus haemagglutinin in urine of a patient with BK virus infection.
mesh_terms: D000818:Animals; D001739:BK Virus / Q000276:immunology*; D006386:Hemagglutination Tests; D006388:Hemagglutinins / Q000652:urine*; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D011120:Polyomavirus / Q000276:immunology*; D014412:Tumor Virus Infections / Q000175:diagnosis / Q000276:immunology*
chemical_list: D006388:Hemagglutinins