"Contraceptives, Oral" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
Compounds, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. The hormones are generally estrogen or progesterone or both.
Below are MeSH descriptors whose meaning is more general than "Contraceptives, Oral".
Below are MeSH descriptors whose meaning is more specific than "Contraceptives, Oral".
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