No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adolescent
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Adult
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Arthritis / immunology*
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Arthritis, Rheumatoid / immunology
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Child
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Child, Preschool
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Female
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HLA Antigens*
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Histocompatibility Antigens*
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Humans
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Inflammation / immunology
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Male
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Middle Aged
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Prospective Studies
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Rheumatoid Factor*
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Sacroiliac Joint / immunology
Substances
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HLA Antigens
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Histocompatibility Antigens
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Rheumatoid Factor