title: Septic arthritis due to Klebsiella in a B27-positive patient.
mesh_terms: D000328:Adult; D001170:Arthritis, Infectious / Q000188:drug therapy / Q000276:immunology*; D002506:Cephalexin / Q000627:therapeutic use; D005260:Female; D006680:HLA Antigens / Q000302:isolation & purification*; D006801:Humans; D007709:Klebsiella / Q000276:immunology; D007710:Klebsiella Infections / Q000188:drug therapy / Q000276:immunology*; D007719:Knee Joint / Q000382:microbiology
chemical_list: D006680:HLA Antigens; D002506:Cephalexin