Figure 4: Effects of a 4-week daily administration of corticosterone on basal levels of circulating corticosterone and adult hippocampal neurogenesis in wild-type mice. (a) Quantitative results of basal levels of serum corticosterone of mice. (b) Representative micrographs of the DAPI+, bromodeoxyuridine+, and doublecortin+ signal in the dorsal dentate gyrus of mice. Scale bar: 100 μm. (c) Quantitative results of the number of bromodeoxyuridine+/doublecortin+ cells (yellow cells indicated by the arrows in the merged panels). (d) Quantitative results of the number of bromodeoxyuridine+ cells (red cells shown in the bromodeoxyuridine panels). (e) Quantitative results of the number of doublecortin+ cells (green cells shown in the doublecortin panels). *P < 0.05, compared to the vehicle group, Tukey's multiple comparisons. Numbers given in the parentheses indicate the sample sizes.