No abstract available
MeSH terms
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Black People / genetics*
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Black or African American
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District of Columbia
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Gene Frequency
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HLA-D Antigens / genetics*
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HLA-DQ Antigens / genetics
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HLA-DR Antigens / genetics
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Humans
Substances
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HLA-D Antigens
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HLA-DQ Antigens
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HLA-DR Antigens