Fig. 3.

Colonization of adult GF mice with a gut microbiota results in cycling of neuronal progenitors. (A) Representative images of a colonic myenteric ganglion of a mouse stained with the cycling cell marker Ki67 (red arrows), neuronal precursor marker Nestin (green), and with nuclei counterstained with Hoechst (gray). (B) Quantification of double-positive Nestin/Ki67 cells. *P < 0.05 vs. GF; N.S., not significant; Kruskal–Wallis test followed by Dunn’s post hoc test. (Scale bars: 20 µm.)