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Sac
(redirected from amniotic sac)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.09 sec.
Sac: see Sac and Fox Sac and Fox, closely related Native Americans of the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages ). Sac and Fox culture was of the Eastern Woodlands area with some Plains-area traits (see under Natives, North American
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SAC - 1. An early system on the Datatron 200 series.

[Listed in CACM 2(5):16 (May 1959)].

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Deep inside his blackberry-shaped blastocyst, some of his cells clumped together to form an "inner cell mass" that would later become Jacob's body, umbilical cord, and amniotic sac.
The boy had been born at 34 weeks' gestational age (weight 2,300 g), and he was treated for a few days with antimicrobial drugs after prolonged rupture of amniotic sac membranes, even though early-onset infection had not been confirmed.
With another set of experiments, they uncovered evidence that SPA triggers birth by activating fetal immune cells called macrophages, which then leave the amniotic sac and travel to the uterus.
 
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