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The presence of a "T-sign" at the inter-twin membrane-placental junction is indicative of monochorionic-diamniotic twins (that is, the junction between the inter-twin membrane and the external rim forms a right angle), whereas dichorionic twins present with a "lambda (λ) sign" (that is, the chorion forms a wedge-shaped protrusion into the ...
Monoamniotic twins are identical or semi-identical twins that share the same amniotic sac within their mother's uterus. [1] Monoamniotic twins are always monochorionic and are usually termed Monoamniotic-Monochorionic ("MoMo" or "Mono Mono") twins. [1] [2] They share the placenta, but have two separate umbilical cords.
The human twin birth rate in the United States rose 76% from 1980 through 2009, from 9.4 to 16.7 twin sets (18.8 to 33.3 twins) per 1,000 births. [5] The Yoruba people have the highest rate of twinning in the world, at 45–50 twin sets (90–100 twins) per 1,000 live births, [6] [7] [8] possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may ...
After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...
Identical twins Rebecca "Becca" Lawrence and Christina "Tina" Keefer came into the world on the same day — and so did their babies. The 23-year-old sisters, who both live in Pennsylvania, gave ...
Evelyn, Adeline, David and Daniel were born at 27 weeks gestation. The smallest baby was Adeline, who weighed 1 pound, 10.5 ounces, while Evelyn, the largest of the bunch, weighed 2 pounds, 9 ounces.
Fraternal twins at two weeks old. The technical term for "fraternal" is "dizygotic" (twins) or "polyzygotic" (triplets or higher order). Fraternal twin sisters taking a nap. Nonidentical twins, the most common kind of multiple birth among humans, occur in about 1 out of every 80 pregnancies.
Six months after giving birth to identical twin boys, an Alabama mom discovered she was pregnant again, with another set of identical twins. Mom of twins gives birth 13 months later — to another ...