Fetus
| Definition: |
The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO. |
| Notes: |
mammalian only; human: 3d month to term; fetus in fetu: index under FETUS /abnorm; FETUS and PREGNANCY: Manual 18.4.3, 21.55; definition & use: 21.53; specialty for fetus & newborn inf = PERINATOLOGY; retained fetus: index under ABORTION, MISSED; for mumm |
| Also Called: |
Fetal Tissue |
Fetus Categories.
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Aborted Fetus - A mammalian fetus expelled by INDUCED ABORTION or SPONTANEOUS ABORTION. |
Fetus Definitions and Terms
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