Unsicker K, Burnstock G
Cell Tissue Res. 1975 Nov 19;163(4):545-60. doi: 10.1007/BF00218499.
The arrangement and fine structure of peritubular myoid cells was studied in the testes of three species of reptiles (Lacerta dugesi, Testudo graeca and Natrix natrix) during two short periods of the seasonal cycle (European spring and autumn) and correlated with some ultrastructural properties of Leydig cells. The lamina propria consists of myoid cells, fibroblasts and non-cellular components comprising collageneous and non-striated microfibrils. Both components are arranged in alternating layers surrounding seminiferous tubules. In spring the lamina propria of lacertilian testis shows 1-5 layers of myoid cells which are rich in 50-70 A filaments and exhibit plasmalemmal and intracellular dense patches, smooth vesicles along the cell membrane and a concentration of organelles in a juxtanuclear position. Leydig cells are rich in smooth ER profiles and have few lipid droplets. In atumumn most myoid cells are replaced by fibroblast-like elements. Leydig cells display large numbers of lipid droplets and dense bodies, but only small amounts of agranular ER. Similar changes are noted in Leydig cells of Testudo and Natrix. However, in these species the boundary tissue of seminiferous tubules fails to show significant alterations comparing spring and autumn animals. In both species the lamina propria exhibits a few fibroblast-like cells interspersed among myoid cells.
在季节性周期的两个短时期（欧洲春季和秋季），研究了三种爬行动物（杜氏蜥蜴、希腊陆龟和草游蛇）睾丸中睾丸管周围肌样细胞的排列和精细结构，并将其与莱迪希细胞的一些超微结构特性相关联。固有层由肌样细胞、成纤维细胞和包含胶原纤维和无横纹微纤维的非细胞成分组成。这两种成分围绕生精小管交替排列成层。春季，蜥蜴睾丸的固有层显示有1 - 5层肌样细胞，这些细胞富含50 - 70埃的细丝，具有质膜和细胞内致密斑、沿细胞膜的光滑小泡以及核旁位置的细胞器聚集。莱迪希细胞富含滑面内质网轮廓，脂滴较少。在秋季，大多数肌样细胞被成纤维细胞样成分取代。莱迪希细胞显示大量脂滴和致密体，但只有少量无颗粒内质网。在陆龟和草游蛇的莱迪希细胞中也观察到类似变化。然而，在这些物种中，比较春季和秋季动物，生精小管的边界组织未显示出明显变化。在这两个物种中，固有层都有一些成纤维细胞样细胞散布在肌样细胞之间。
