论文部分内容阅读
对６３例胚胎期至生后不同发育时期Ｗｉｓｔａｒ大鼠睾丸Ｌｅｙｄｉｇ细胞进行光镜、电镜观察及立体学分析。结果表明：１．大鼠睾丸Ｌｅｙｄｉｇ细胞从胚胎１５ｄ出现，１７ｄ初具分泌类固醇激素的结构特点。２．Ｌｅｙｄｉｇ细胞存在两个细胞增殖峰，一个在胚胎１７～１９ｄ，另一个在生后４周。两峰之间有一个低谷（约在生后第２周）。从胚胎至生后，细胞核的体密度逐渐减小，细胞质、线粒体及滑面内质网的体密度逐渐增大，脂滴的体密度呈现较大波动，在一定程度上反映了间质细胞的功能状态。３．生后第２周后，睾丸间质内明确见到明、暗两种细胞。
Sixty-three Leydig cells of Wistar rats from embryonic period to different developmental stages were observed under light microscope, electron microscope and stereology. The result shows: 1. The rat testicular Leydig cells emerged from the embryo 15d and began to have the structural characteristics of secreting steroid hormone at the beginning of 17d. 2. Leydig cells present two cell proliferation peaks, one at 17-19 days in the embryo and the other at 4 weeks after birth. There is a trough between the two peaks (about the second week after birth). From embryonic to postnatal, the density of nucleus gradually decreased, the density of cytoplasm, mitochondria and smooth endoplasmic reticulum gradually increased, and the body density of lipid droplets showed great fluctuation, to a certain extent, the density of interstitial cells Function status. 3. After 2 weeks after birth, the testicle interstitial clearly see the light and dark cells.