Amniotic sac
volume
British pronunciation/ˌamnɪˈɒtɪk sˈak/
American pronunciation/ˌæmnɪˈɑːɾɪk sˈæk/

"amniotic sac"的定义和意义

Amniotic sac
01

thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

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