Effects of Changtai granules, a traditional compound Chinese medicine, on chronic trinitrobenzene sulfonic acid-induced colitis in rats

Figure 2 Histological findings in UC. A: Normal group, the mucosa is normal (HE, ×200); B: control group, gross ulcers, epithelial necrosis at mucosal surface and inflammatory cell infiltration (HE, ×200); C: DX group, gross ulcers and proliferous granuloma, inflammatory cell infiltration (HE, ×200); D: CTG group at dose of 2.9 g crude drug/kg, small mucosal ulcers and crypto abscess formation (HE, ×200); E: CTG group at dose of 5.7 g crude drug/kg, inflammatory cell infiltration (HE, ×200); F: CTG group at dose of 11.4 g crude drug/kg, the mucosa recovered (HE, ×100).