light microscopic investigation on the naturally unilateral abdominal cryptorchid and scrotal testes in baladi goat

ABSTRACT

Histological and some histoenzymological studies were carried out on six cases of naturally unilateral cryptorchid testes of adult Baladi goat in this investigation and they were compared with the scrotal ones. Morphologically, the cryptorchid abdominal testes showed testicular hypoplasia, their seminiferous tubules were surrounded by a coarse fibrous connective tissue stroma, the lining epithelium of these seminiferous tubules was formed of one or two layers of degenerated epithelial cells. Spermatogonia and Sertoli cells were detected in the seminiferous tubules of the abdominal cryptorchid testes, in addition to the interstitial Leydig cells. The scrotal testes in this study exhibited a normal histological appearance where the seminiferous tubules were lined with the spermatogenic cells series at different stages of maturation, as well as the Leydig cells showed a normal picture. Both the alkaline and acid phosphatase enzymes were observed in more intense reactivity in the abdominal cryptorchid testes in comparison to the scrotal ones