gaba and related substances , baclofen and muscimol , had no effect on the resting tension but reversibly depressed contractions induced by electrical field stimulation in a dose-dependent fashion , ic50 values ( mean +/- s.e . ) being 5.6 +/- 1.4 x 10 ( -6 ) m , 6.8 +/- 0.9 x 10 ( -6 ) m and 8.5 +/- 1.5 x 10 ( -5 ) m , respectively .
C0016904
gaba
C0004609
baclofen