الفهرس 
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Abstract
The present work includes histological and histochemical investigations, as well as ultrastructural studies on the kidneys and testes of three Egyptian rodent species. These rodents are Rattus rattus, Arvicanthis niloticus and Jaculus Orientalis.the obtained results showed great similaries in the sturcture of the test and kidneys of the three studies species<however some differences were recognized including the size of golmeruli.