No abstract available
MeSH terms
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ABO Blood-Group System*
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Blood Group Antigens*
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Blood*
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Duodenal Ulcer*
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Genetics, Medical*
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Humans
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Pepsin A*
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Pepsinogen A*
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Pepsinogens*
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Saliva*
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Salivation*
Substances
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ABO Blood-Group System
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Blood Group Antigens
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Pepsinogens
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Pepsinogen A
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Pepsin A