Fig. 5.

Comparison of labellings for major histocompatibility complex class I (MHC I) and MHC II in intestinal epithelial cells (IEC) of healthy controls and patients with active inflammatory bowel disease (IBD). Proportions of immunogold labelling at the basolateral membrane (BLM) and in multi-vesicular bodies (MVB) were analysed as described in Materials and methods. The results are presented as the percentage of total counts in five patients per localization. Error bars represent the standard error of the mean; *P < 0·05; **P < 0·005.