HISTOCHEMICAL AND CYTOLOGICAL STUDIES ON THE DIGESTIVE SYSTEM OF THE NILE CATFISH CHRYSICHTHYS AURATUS

Document Type : Research article

Authors

Abstract

Acid mucopolysaccharides were localized in the mucous cells of the lips, buccopharyngeal cavity and oesophagus. They were also demonstra ted in the apical ends of the columnar surface ep < /strong>ithelial cells of the stomach and the goblet cells and brush border of the intestinal epithel ium. Glycogen was pronouncedly demonstrated in the hepatic cells and feebly so in the exocrine pancreatic cells. A parallel between the amount of RNA and proteins in the gastric gland cells, exocrine pancreatic cells and alarm substance cells was revealed. The pattern and amount of Golgi bodies of the gastric gland cells, hepatic cells and exocrine p < /strong>ancreatic cells were found to vary according to the secretory activity of the cell.