title: Studies on the histogenesis of the tunica mucosa of the small and large intestines of the camel (Camelus dromedarius). I. Histogenesis of the small intestinal mucosa.
abstract: The histogenesis of the small intestinal mucosa passes through a previllous stage, comprising development until the formation of villi (at a C RL of about 15 cm), and a villous stage, comprising the further development. In the previllous stage, the mucosa consists of a Lamina epithelialis made up of undifferentiated cells with stratified nuclei and a Lamina propria/submucosa made up of homogeneous mesenchyme. The villi appear as luminal epithelial outgrowths associated with vascularized mesenchymal stalks and their growth advances in a cranio-caudal direction. The intestinal glands were firstly observed at the 26 cm-stage as downgrowths of the intervillous epithelium into the underlying mesenchyme.
mesh_terms: D000818:Animals; D002162:Camelus / Q000196:embryology*; D004534:Egypt; D004848:Epithelium / Q000648:ultrastructure; D005865:Gestational Age; D007413:Intestinal Mucosa / Q000196:embryology* / Q000648:ultrastructure; D007421:Intestine, Small / Q000196:embryology*; D008871:Microvilli / Q000648:ultrastructure