author(s)
Amer M Hussin

abstract
The present histological work was designed to study the histological constituents of the prostate glands in adult Iraqi dogs. For this purpose eight adult dogs were prepared, surgically sacrificed and the tissue of prostate glands were removed, prepared and fixed in 10% neutral buffered formalin. Routine histological processes were carried out. The slides were stained by H&E stain. The result found that the tissue of dog prostate was thrown clearly into two apparent zones, an outer peripheral, and an inner transitional. The outer peripheral zone occupied wider area and irrigated with high blood supply compared to the narrower inner transitional zone. The majority of the prominent glandular tissue was restricted to the outer zone that was surrounded by limited muscular and connective tissue elements. The epithelium of this zone was highly developed. On the other hand the inner zone, was restricted and consisted of fewer mucosal and sub mucosal tubuloalveolar glands that surrounded by a considerable amount of connective tissue elements including the smooth muscle fibers. This may explain why the inner zone houses benign tumor and the peripheral zone houses malignant tumor, so that the current study hypothesized that, according to the intensity of secretory activity and the cellular performance of the glandular and connective tissue, benign or malignant tumor can occur.