不同龄人胚胎儿数种细胞内质网超微结构的观察

Observation on ER Ultrastructures in Several Human Embryonic Cells with Different Gestations

目的 观察不同龄人胚胎的结肠粘膜上皮细胞、肾小管上皮细胞及肝细胞的内质网的超微结构。方法 用透射电镜技术。结果 随着胚胎发育 ,内质网数量逐渐增多 ,发育成熟 ,结构复杂化 ,而且不同组织细胞在不同发育阶段其内质网结构各有特点。

Objective To observe the ER ultrastructures in humn embryonic epithelial cells of colonic mucosa、renal tubule and hepatocytes and also their alterations in embryogenesis.Methods Transmission electromicroscopy technique.Results With the embryonic development, the ER increased in amount, became complex in structure and with its characteristic ER structures in different cells. Conclusion The changes of ER structures are one of the characters during cell differentiation.