1 the mechanisms by which veratridine increases the release of gamma-aminobutyric acid ( gaba ) from brain slices have been studied.2 exposure of superfused cerebro-cortical , nigral or cerebellar slices to veratridine ( 5 mum ) or kcl ( 50 mm ) caused large increases in the efflux of [ ( 3 ) h ] -gaba.3 reduction of the external ca concentration [ ca ] ( o ) to zero had strikingly different effects on the veratridine and k-evoked release of [ ( 3 ) h ] -gaba .
C0006104
brain
C0086045
ca