title: HLA-B27 in Black patients with ankylosing spondylitis.
mesh_terms: D044383:Black People; D005260:Female; D006680:HLA Antigens / Q000032:analysis*; D006649:Histocompatibility Antigens / Q000032:analysis*; D006801:Humans; D008297:Male; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens