Figure 5.

In the scatterplot of normalized numbers of young differentiating neurons (estimated number of DCX-positive cells relative to the total granule cell number) to log-transferred normalized proliferating cell (estimated number of Ki67-positive cells relative to the total granule cell number) the species from the cold European climate (Dfb) are separated from those of the general warm southern African habitat (Cwa), which is described as temperate in the Köpper–Geiger climate classification. Southern African species show lower proliferation (P = 0.0003), but higher neuronal differentiation (P = 0.0036) than the rodents from the cold climate. Shaded areas indicate the 95% confidence interval.