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LKE dose dependently protects NSC-34 motor neuron-like cells from toxicity caused by hydrogen peroxide. Cells were treated with the indicated concentrations of H2O2 in the presence or absence of various doses of LKE, and cell viability was determined by tetrazolium reduction 24 h later. Data represent mean ± SEM (n = 6). Both 100 and 500 μm LKE produced statistically significant protection as assessed by repeated-measures ANOVA.
