Research Article

Comparative Histomorphological and Histochemical Studies on the Oesophagus of Nile Tilapia Oreochromis niloticus and African Catfish Clarias gariepinus

Figure 5

Photomicrographs of sections in the esophagus of Nile tilapia (a) and African catfish (b) showing the epithelial lining of the esophagus with longitudinal mucosal folds and primary (P) and secondary (S) folds with connective tissue core (C) derived from submucosa. H&E, ×100.
(a)
(b)