Freddo T F, Raviola G
Invest Ophthalmol Vis Sci. 1982 Mar;22(3):279-91.
This study reports the results of a systematic analysis of the iris vasculature in Macaca mulatta. Through the application of a variety of morphologic procedures it has been demonstrated that in rhesus monkeys, all iridial vessels, regardless of their diameter, have a similar structure. Their walls consist of (1) endothelial cells in a continuous layer resting on a basal lamina, which are provided with a small number of blunt luminal protrusions and slender basal lamellae; (2) pericytes sandwiched between two layers of the basal lamina, which are characterized by a smooth basal surface and adluminal processes that interdigitate with the basal leaflets of the endothelial cells; and (3) an adventitia of fibroblasts, melanocytes, and occasional macrophages arranged in one or more layers. Typical smooth muscle cells are not found in any vessels of M. mulatta iris. Thus the vessels of the rhesus monkey iris have a remarkably homogeneous morphologic appearance and cannot be classified according to the traditional criteria for arterioles, capillaries, and venules.
本研究报告了对猕猴虹膜血管系统进行系统分析的结果。通过应用多种形态学方法已证明，在恒河猴中，所有虹膜血管，无论其直径大小，都具有相似的结构。它们的管壁由以下部分组成：（1）一层连续的内皮细胞，位于基膜上，这些内皮细胞有少量钝圆的管腔突起和细长的基膜板；（2）周细胞夹在两层基膜之间，其特征是基底面光滑，管腔侧突起与内皮细胞的基小叶相互交错；（3）由成纤维细胞、黑素细胞和偶尔的巨噬细胞组成的一层或多层外膜。在恒河猴虹膜的任何血管中都未发现典型的平滑肌细胞。因此，恒河猴虹膜的血管具有非常均匀的形态外观，无法根据小动脉、毛细血管和小静脉的传统标准进行分类。
