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The chorionic vesicle

The chorionic vesicle of No. 7802, stage 7. The branched villi are evident. A cytotrophoblastic shell is forming . Section 44-3-5.

Fig. 7-8. O'Rahilly and Müller, 1987.

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Keywords: chorionic vesicle, chorionic villi, cytotrophoblastic shell

Source: The Virtual Human Embryo.