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ldill01 ldill01
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Posts: 325
6 years ago
The figure shows a human embryo 31 days after conception. Which of the following structures is part of the placenta?

 

A) embryo
B) chorion
C) amnion
D) yolk sac
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atree1157atree1157
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Posts: 231
6 years ago
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6 years ago
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