The dark cells of crista ampullaris in 11 cases of human fetuses, from 10th week to 37th week, were observed by transmission electron microscope.

  • 用透射电镜对11例10~37周胎儿壶腹嵴暗细胞进行观察。

  • 互联网摘选 2025-01-20 11:44:47

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