Oral Feeding of Probiotic Bifidobacterium infantis: Colonic Morphological Changes in Rat Model of TNBS-Induced Colitis

Table 1

Criteria for scoring macroscopic colonic damage.

Score	Criteria
0	No damage
1	Hyperemia, no ulcers
2	Linear ulcer with no significant inflammation
3	Linear ulcer with inflammation at one site
4	Two or more sites of ulceration/inflammation
5	Two or more major sites of ulceration and inflammation or one site of ulceration/inflammation, extending >1 cm along the length of the colon
6–10	If damage covers >2 cm along the length of the colon, the score is increased by one, for each additional centimeter of involvement

A lower score represents a healthier rat (modified from Peran et al., 2007 [11]).