title: [Frequency of antigens of the HL-A system in rheumatoid arthritis and in ankylosing spondylitis in an ethnically homogeneous population].
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000276:immunology*; D006680:HLA Antigens / Q000032:analysis; D006649:Histocompatibility Antigens / Q000032:analysis; D006801:Humans; D013167:Spondylitis, Ankylosing / Q000235:genetics / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens
vernacular_title: Frequenza degli antigeni del sistema HL-A nell'artrite reumatoide e nella spondilite anchilosante in una popolazione etnicamente omogenea