Suppression of Dextran Sulfate Sodium-Induced Colitis in Mice by Radon Inhalation

Table 2

Histological damage scoring system.

Parameters	Score	Histological features
(i) Surface epithelial loss	0	No change
(ii) Crypt destruction	1	Localized and mild
	2	Localized and moderate
(iii) Inflammatory cell infiltration into the mucosa	3	Extensive and moderate
	4	Extensive and severe

The sum of the scores of three parameters was defined as the mucosal damage score.