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yolk nuclei相关的网络解释

查询词典 yolk nuclei

与 yolk nuclei 相关的网络解释 [注:此内容来源于网络,仅供参考]

midgut:肠

人胚发育至第20天左右时,在原始消化管(primitive gut)腹侧的前肠(foregut)与中肠(midgut)的分界处,也就是前肠末端附近的卵黄囊(yolk sac)腹侧壁的内胚层细胞向外增生突出,形成一团细胞,称为肝始基(hepatoblast).

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