HISTOGENESIS OF THE DUODENAL MUVCOSA OF THE EGYPTIAN WATER BUFFALO (Bos bulalus L.) DURING THE PRENATAL LIFE.

Document Type : Research article

Authors

Abstract

The histogenesis of the duodenal mucosa passes through a previllous stage, comprising development until the formation of villi (at CVRL of about 7.5 cm), and villous stage, comprising further development. The villi were firstly observed at CVRL 7.5 cm as luminal epithelial outgrowths associated with vascularised mesenchymal stalks. The intestinal glands were firstly observed at CVRL 14.5 cm as downg rowths of the intervillous epithelium into the underlying mesenchyme. The lamina muscularis muscosae was firstly observed at the 94 cm stage.