Fig. 3.
Numbers of BrdU+ cells that migrated from the dorsolateral corner of the subependyma to the olfactory bulbs. The numbers of olfactory bulb BrdU+cells 31 d after BrdU injection in (A) B6129/F2 control and TGFα(−/−) mice and (B) 2- to 4-months-old control and 23- to 25-months-old mice. Counts are the mean ± SEM of the total number of BrdU+ cells (from every tenth section in this region per animal) from five separate mice in the TGFα(−/−) and control groups, and the total number of BrdU+ cells (from every eighth section in this region per animal) from four separate mice in the senescent and control groups. * Significantly different from control (p < 0.05).