No abstract available
MeSH terms
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Carbon Radioisotopes
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Diet
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Female
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Folic Acid / administration & dosage
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Humans
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Neural Tube Defects / etiology
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Neural Tube Defects / metabolism*
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Pregnancy
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Pregnancy Complications / metabolism*
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Tetrahydrofolates / blood
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Tetrahydrofolates / metabolism
Substances
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Carbon Radioisotopes
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Tetrahydrofolates
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Folic Acid