Fig. 3
From: Humoral factors in ALS patients during disease progression
Serum glutathione levels. Glutathione (GSH) concentrations were assayed in sera of ALS patients and controls at both visits using a Glutathione Fluorometric Assay Kit. Dramatically lower GSH levels (*** p < 0.001) were determined in sera of ALS patients at both visits compared to controls. Results are plotted as mean ± SEM. Statistical significance was determined using two-tailed t-tests (*** p < 0.001)