"Zona Pellucida" 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.
A tough transparent membrane surrounding the OVUM. It is penetrated by the sperm during FERTILIZATION.
Below are MeSH descriptors whose meaning is more general than "Zona Pellucida".
Below are MeSH descriptors whose meaning is more specific than "Zona Pellucida".
This graph shows the total number of publications written about "Zona Pellucida" by people in this website by year, and whether "Zona Pellucida" was a major or minor topic of these publications.
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