Figure 4From: The inflammatory infiltrate in the acute stage of the dextran sulphate sodium induced colitis: B cell response differs depending on the percentage of DSS used to induce itMHC Class II expression (labelled with TIB 120) in healthy colonic tissue (control). Epithelial cells do not express this antigen. Expression is increased in inflamed colonic tissue at day 8 of DSS ingestion. Positive cells can also be found concentrated in the lymphoid follicle and there is expression on epithelial cells. 2.5% DSS-induced colitis. Findings from inflamed colons of 5%DSS-induced colitis were similar. Original magnification × 20.Back to article page