Figure 3

Macroscopic appearance of the colon extracted from rats administered intracolonic 2,4,6-trinitrobenzene sulfonic acid (TNBS) (a), TNBS plus cystamine (CysN) (b) and CTR (c). Immunolocalization of transglutaminase type 2 (TG2) in the colonic mucosa of TNBS (a1), TNBS plus CysN (b1) and CTR (c1) rats. Immunolocalization (brown staining) of tumor necrosis factor-α (TNF-α) in the colonic mucosa of TNBS (a2), TNBS plus CysN (b2) and CTR (c2) rats.