No abstract available
MeSH terms
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Adult
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Aged
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Blood Group Antigens
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Coal Mining
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Ethnicity
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HLA Antigens / genetics*
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HLA Antigens / isolation & purification
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Humans
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Male
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Middle Aged
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Pennsylvania
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Pneumoconiosis / complications
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Pneumoconiosis / immunology*
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Pneumoconiosis / pathology
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Pulmonary Fibrosis / etiology
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West Virginia
Substances
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Blood Group Antigens
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HLA Antigens