Jesy Nelson is bravely sharing her journey with Twin-to-Twin Transfusion syndrome. In January, the former Little Mix singer announced that she and Zion Foster were expecting twins. Earlier this month, ...
The chorion lies closest to the placenta. The chorionic sac encompasses the fetus and the amnion and is covered with chorionic villi until the 8th week. After the 8th week, these villi are ...
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