Figure 5

FISH analysis of sections of the colon (A) and ileum (C) of young mice using the general bacterial probe EUB338-Alexa Fluor 488 (green), and nuclear staining DRAQ5 (blue), and similar analysis of sections of the colon (B) and ileum (D) of old mice. Arrows indicate the distance between bacteria and epithelium. Scale bars: 50 μm.