Table 1. Scoring criteria for histologic damage in colon sections.

Histological change	Scale (0–3)
Inflammatory infiltration	0, rare inflammatory cells in the lamina propria were counted [0–10/high-powered field];
	1, increased numbers of inflammatory cells in the lamina propria [11–20/high-powered field];
	2, confluence of inflammatory cells, extending to the submucosa;
	3, transmural extension of the infiltrate
Epithelial integrity	0, intact epithelium;
	1, a partially broken epithelial line;
	2, separated from the mucosa;
	3, epithelium completely removed or with exposed and digested lamina propria
Mucosal edema	0, normal;
	1, slight;
	2, intermediate;
	3, intense