Table 1

Morphology and myeloperoxidase activity (MPO) of colonic tissue at three time points after intracolonic administration of TNBS (80 mg/kg), ethanol (40%), or saline

		Day
		2	6	15
Gross damage score
Saline	0	0	0
Ethanol	2.4 (0.2)^*	ND	ND
TNBS	13.7 (0.6)^†	11.8 (0.4)^†	4.4 (0.7)^*
MPO (U/g tissue)
Saline	1.3 (0.4)	1.6 (0.2)	2.0 (0.4)
Ethanol	18.4 (3.5)^*	ND	ND
TNBS	35.1 (3.5)^†	52 (5.5)^‡	6.2 (2.8)

Values are means (SEM) of 5–6 rats.
Different symbols denote a significant difference between groups, p<0.05.
ND, not determined.