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Cali Fornia Cali Fornia
wrote...
Posts: 5080
7 years ago
In humans, from which extraembryonic membrane will the first blood cells arise?
A) yolk sac
B) allantois
C) chorion
D) amnion
Textbook 
Human Anatomy & Physiology

Human Anatomy & Physiology


Edition: 1st
Author:
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wrote...
7 years ago
A
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