Age Related Histochemical Observations of Pancreas in Japanese Quail (Coturnix Coturnix Japonica)

In all age groups of birds, there was significant PAS positive activity in the capsule, septa, apical region of lining epithelial cells of intercalated duct, intralobular duct, and interlobular duct, as well as blood vessels in all lobes of the pancreas. The PAS positive activity of the zymogen granules in groups I and II was extremely high, whereas it was reduced to moderate and moderate to low in groups III and IV, respectively. Intense PAS activity was visible on the basement membrane and apical border of the lining epithelial cells of interlobar ducts. All endocrine lobes across all age groups of birds had modest to moderate PAS activity.