title: The significance of the HL-AB27 antigen in a rheumatologic practice.
mesh_terms: D001168:Arthritis / Q000276:immunology; D001171:Arthritis, Juvenile / Q000276:immunology; D016918:Arthritis, Reactive / Q000276:immunology; D006680:HLA Antigens / Q000302:isolation & purification*; D006649:Histocompatibility Antigens / Q000302:isolation & purification*; D006801:Humans; D012216:Rheumatic Diseases / Q000276:immunology*; D013167:Spondylitis, Ankylosing / Q000276:immunology
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens