Fig. 1

GABA inhibits H2O2-induced ROS production. Results are the mean of at least three separate ROS assay. Values are means (n = 12), with standard errors represented by vertical bars. Means with different lower-case letters are significantly different (P < 0.05). Control, control medium; H2O2, medium containing 100 μM H2O2; H2O2 + (50 μM, 100 μM, 200 μM) GABA, medium containing 100 μM H2O2 and GABA; ROS, reactive oxygen species