Figure 2 in Gastroesophageal tube of the Iguana iguana (Iguanidae): histological description, histochemical and immunohistochemical analysis of 5-HT and SS cells

Figure 2. Histological sections of the (a,b) oesophagus, (c) cranial, (d) middle and (e-f) caudal regions of stomach of I. iguana. (a) After Periodic Acid Schiff (PAS) staining the glycoconjugates are identified in magenta in the goblet cells (arrow) in oesophagus; (b) The ephitelium (EP) of oesophagus has positive histochemical reaction to Alcian Blue (AB, pH 2.5); (c-f) The epithelium lining of stomach is simple columnar mucous with positive histochemical reactions to PAS (c,e) and AB (d,f). (c) Note the mucous cells PAS-positive along the glands (arrowhead) in cranial region of stomach; (e) In caudal region gastric glands (G) are positive only for PAS reaction.