title: HLA, ankylosing spondylitis and rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000276:immunology*; D005260:Female; D005787:Gene Frequency; D008040:Genetic Linkage; D006680:HLA Antigens / Q000235:genetics*; D006801:Humans; D008297:Male; D011247:Pregnancy; D044469:Racial Groups; D013167:Spondylitis, Ankylosing / Q000235:genetics / Q000276:immunology*; D044465:White People
chemical_list: D006680:HLA Antigens