Fig. 4

Quantification of M cells and PCNA. Expression of cytokeratin 18, and measurements of intestinal epithelial cell proliferation. a Ileal sections were immunostained with anti-cytokeratin 18 monoclonal antibodies. b Immunofluorescence staining of proliferation marker PCNA from jejunum tissue. Scale bars: 50 μm in (a) and 100 μm in (b). Differences were considered significant at (*) 0.01 < p < 0.05, (**) p < 0.01