light and electron microscopic studies on the posterior kidney of oreochroms niloticus

Document Type : Original Articles


The posterior kidney of Oreochromis niloticus was examined using both light and transmission electron microscope (TEM). This study showed that the poste 1ior kid ney could not be demarcated into a renal cortex or medulla, but instead numerous neph­rons and ducts. Each nephron was formed of a renal corpuscle and a renal tubule. The renal corpuscle contained capillary glomerulus enclosed by Bowman’s capsule. The re­ nal tubule was subdivided into a short neck segment, first and second portion of proxi­ mal segment. intermediate segment. distal segment and collecting tubule. The latter was connected to the mesonephric duct

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