Figure 2

Expression of the Ki-67 marker of proliferation in the epithelium of murine colonic explants (A–D) Ki-67 expression is maintained within the epithelial cell layer throughout the culture period in explant sections of mouse colon after 8 (A), 12 (B), 14 (C) and 30 (D) days of culture respectively. Ki67 labeling seems to gradually diminish with increasing culture time. Scale bars, 25 µm.