Phenomena and Processes [G] » Reproductive and Urinary Physiological Phenomena [G08] » Reproductive Physiological Phenomena » Pregnancy Trimesters
Description
The three approximately equal periods of a normal human PREGNANCY. Each trimester is about three months or 13 to 14 weeks in duration depending on the designation of the first day of gestation. MeSH
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Subtype Terms (3)
Pregnancy Trimester, First
7 approved drugs
Pregnancy Trimester, Second
3 approved drugs
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