Chinese Med J Peking
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To examine the relationship between ankylosing spondylitis and heterogeneity of HLA-B27 in Chinese. ⋯ The prevalences of various subtypes of HLA-B27 vary in different races. HLA-B2704 is the main subtype in Chinese Han nationality. The HLA-B27 specific residues that are shared by the subtypes might be involved in the pathogenesis of ankylosing spondylitis.