Table 1.

Scoring System for DSS-Induced Colitis (Pathology Score)

Score	0	1	2	3	4
Area involved	0%	1%–10%	10%–25%	25%–50%	>50%
Follicles	Normal (0–1)	Minimal (2–3)	Mild (4–5)	Moderate (6–7)	Severe (>7)
Edema	Absent	Minimal	Mild	Moderate	Severe
Fibrosis	Absent	Minimal	Mild	Moderate	Severe
Erosion/ulceration	0%	1%–10%	10%–25%	25%–50%	>50%
Crypt loss	0%	1%–10%	10%–25%	25%–50%	>50%
Granulocytes	Normal	Minimal increase	Mild increase	Moderate increase	Severe increase
Mononuclear cells	Normal	Minimal increase	Mild increase	Moderate increase	Severe increase