Fig. 2

DSS-induced chronic ulcerative colitis. C57BL/6 mice were fed 1.5% (DSS) for 7 days followed by purified water for 7 days, repeated 3 times, and then tested for behavior. Mice were sacrificed at the end of the experiment, and brains and colons were collected. a Experimental procedure, b body weight change, c disease activity index (DAI), d colon length, e colon HE staining(200 ×). Data are expressed as mean ± SD of ten mice in each group. *P < 0.05, **P < 0.01 and *** < 0.001vs. Control group.Data are expressed as mean ± SD of ten mice in each group. *P < 0.05 and**P < 0.01 vs. Control2 group