title: [HLA-B27 antigen and seronegative arthritis].
authors.forename: B
authors.initials: B
authors.lastname: Amor
mesh_terms: D000328:Adult; D017668:Age of Onset; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D005260:Female; D015796:HLA-B27 Antigen / Q000032:analysis* / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012698:Serologic Tests; D013166:Spondylitis / Q000276:immunology
chemical_list: D015796:HLA-B27 Antigen