Placenta Formation and Development
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Explanation:
The placenta is derived from both maternal and fetal tissues. The mother produces the capillary bed that forms the lacunar network of the placenta.
The fetus produces both the cytotrophoblast (choice B) and the syncytiotrophoblast (choice E), which 
together form the chorion (choice A). The earliest projections of this are called the primary villi (choice D).Tags:
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