No abstract available
MeSH terms
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Erythroblastosis, Fetal / enzymology
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Female
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Fetal Death
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Fetal Diseases / enzymology
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Gestational Age
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Humans
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Hydroxysteroid Dehydrogenases / blood*
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Infant
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Placenta / enzymology*
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Pregnancy Complications / enzymology*
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Pregnancy*
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Time Factors
Substances
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Hydroxysteroid Dehydrogenases