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当前学科：女性生殖系统生理
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由一个处于减数分裂双线期的初级卵母细胞及在其周围的单层梭形颗粒细胞层环绕组成，此卵泡为()
A . A．原始卵泡
B . B．窦前卵泡
C . C．窦状卵胞
D . D．次级卵泡
E . E．成熟卵泡
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