Comparative Histomorphological Studies on Oesophagus of Catfish and Grass Carp

Figure 5

Scanning electron micrograph of the anterior part (a–c) and posterior part (d–f) of oesophagus of catfish and oesophagus of grass carp (g–i). Polyhedral-shaped superficial epithelial cells (ep). Mucosal folds (mf), microvilli (mv), microridges (mr), and long concavities (c) between them. Notice the presence of goblet cells (gc), microvilli (arrow), microridges (arrow head), and mucus (m).