A) Bar graphs representing the average number of cells that were collected between sedentary and active rats. Data presented as mean ± S.E. B) Bar graphs represent the average number of cells collected in active and sedentary rats in a rostro-caudal manner. For ACTIVE:SED respectively n= 1:1 (FN +160), 1:1 (FN +80), 2:1 (FN -80), 4:2 (FN -160), 5:4 (FN -240), 5:4 (FN -320), 5:4 (FN -400), 4:4 (FN -480), 1:3 (FN -560). The number of animals precluded formal statistical analysis. C) Bar graphs represent the average number of Fluorogold-positive (FG +ve) cells collected per slide at each rostrocaudal level taken from active and sedentary animals. For ACTIVE:SED respectively n= 1:1 (FN +160), 1:1 (FN +80), 2:1 (FN -80), 4:2 (FN -160), 5:4 (FN -240), 5:4 (FN -320), 5:4 (FN -400), 4:4 (FN -480), 1:3 (FN -560). The number of animals precluded formal statistical analysis.