Time course of basal (--) and (--) K⁺-evoked GABA release from cerebellar slices in normoxia and basal (-∆-) and K⁺-stimulated (-▴-) GABA release in ischemia in 7-day-old (a) and 3-month-old (b) mice. The results are means of 4–8 independent experiments with SEMs indicated. Note the threefold differences in the scale of the -axis in panels (a) and (b). Ischemia significantly () enhanced the release at both ages. K⁺ stimulation was likewise significantly effective in both cases.