Figure 6: The gut microbiota is not responsible for crypt cell death after TBI.
From: Blockade of TLR3 protects mice from lethal radiation-induced gastrointestinal syndrome

(a) TUNEL-staining of small intestinal crypts of SPF and GF mice 6 h after TBI and BMT. TUNEL-stained epithelium shows green fluorescence. Nuclei were stained with DAPI (blue). Scale bar, 100 μm. The right-hand panel shows numbers of TUNEL-positive cells. n=3; results are means±s.e.m. (b) H&E staining of crypts of SPF and GF mice on day 3. Scale bar, 100 μm. The right-hand panel shows the numbers of microcolonies. n=3; results are means±s.e.m. Results are representative of two independent experiments.