Bobrik I I, Shevchenko E A, Parakhin A I, Cherkasov V G
Arkh Anat Gistol Embriol. 1984 Oct;87(10):78-81.
The formation of the organospecific hemomicrocirculatory bed of the ovaries and testes has been studied by a complex of light, transmissive and scanning electron microscopy in 3--9-month-old human fetuses. The change of the diffusive protocapillary bed is secured by: 1) reduction of some protocapillaries; 2) appearance of secondary capillaries from the growth buds of the preceeding microvessels; 3) formation of arteriolar and venular links of the hemomicrocirculatory bed from the protocapillaries at the expense of differentiation of the developing paravasal connective tissue into cellular elements of the muscular and adventitial tunics. The secondary blood capillaries of the human gonads are predominantly formed intraendothelially. During the prenatal ontogenesis presence of the secondary blood capillaries of somatic uninterrupted type is specific for the human gonads.
通过光学显微镜、透射电子显微镜和扫描电子显微镜的综合手段，对3至9个月大的人类胎儿卵巢和睾丸的器官特异性血液微循环床的形成进行了研究。扩散性原始毛细血管床的变化是由以下因素促成的：1）一些原始毛细血管减少；2）从前驱微血管的生长芽中出现次级毛细血管；3）以发育中的副血管结缔组织分化为肌肉层和外膜层的细胞成分的方式，由原始毛细血管形成血液微循环床的小动脉和小静脉连接。人类性腺的次级毛细血管主要在内皮内形成。在产前个体发育过程中，体细胞不间断型次级毛细血管的存在是人类性腺所特有的。
