some morphological studies on immunological organs in ostrich

The current study was carried out on the cloacal lymphoid tissues, the thymus glands and the spleens of 18 ostriches of both sexes, at two weeks, 8 months, 20 months and 24 months. The specimens were collected from Hollandia ostrich farm in Wady El-Mull-lThe anatomical findings revealed that, there is no true cloacal bursa in ostrich but there is a cloacal lymphoid tissue (equivalent for lymphoid tissue of bursa) in the mucosa of the dorsal and lateral wall of the proctodeum. The mucosa of the dorsal and