Figure 7. Density of proliferating non-microglial cells.

A. Density of Ki67⁺ cells that did not express Iba1 in normally aging rats (values combined for sham irradiated, control rats of each age from the 1- and 10-week survival groups). Mean values (+sem) are indicated. Results of post-hoc comparisons are indicated as described for Figure 2. B, C. WBI-induced changes in the density of Ki67⁺/Iba1⁻ cells at 1 (B) and 10 (C) weeks after WBI. Mean values (+sem) are indicated. Asterisks indicate that the mean for irradiated animals was significantly different from that for age-matched, sham irradiated controls.