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"Superfetation" 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.

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The FERTILIZATION of an OVUM that takes place when a FETUS is already present in the UTERUS. Superfetation results in an unusual PREGNANCY with fetuses of different ages and sizes developing in utero simultaneously.

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This graph shows the total number of publications written about "Superfetation" by people in this website by year, and whether "Superfetation" was a major or minor topic of these publications.
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