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Pregnancy Trimester, First

"Pregnancy Trimester, First" 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 beginning third of a human PREGNANCY, from the first day of the last normal menstrual period (MENSTRUATION) through the completion of 14 weeks (98 days) of gestation.


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This graph shows the total number of publications written about "Pregnancy Trimester, First" by people in this website by year, and whether "Pregnancy Trimester, First" was a major or minor topic of these publications.
Bar chart showing 15 publications over 11 distinct years, with a maximum of 3 publications in 2013
To see the data from this visualization as text, click here.