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The amniotic sac is filled with fluid, which provides cushioning and protection.—Beth Warren, The Tennessean, 2 July 2025 Non-identical twins come from two different eggs and will have two sacs and two placentas; identical twins come from the same egg, but most develop separate placentas and amniotic sacs for each baby.—Nicole Villalpando, Austin American Statesman, 2 July 2025 According to Elliott, two of the babies shared the same amniotic sac and had the umbilical cord inserted into the fetal membranes instead of the placenta, which could have resulted in a 30-40% risk of death.—Anna Lazarus Caplan, People.com, 3 Apr. 2025 This means that each baby has their own placenta and amniotic sac, rather than sharing with each other.—Alyce Collins, Newsweek, 11 Mar. 2025 See All Example Sentences for amniotic sac
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