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Forest plot displaying blood GSH concentrations in AD and control subjects, by the intracellular and extracellular GSH subgroups. Shown are the standardized mean differences (SMD) and 95% confidence intervals (95% CI). Pooled SMD [95% CI] = −0.87 [−1.30, −0.44], z=3.96, p<0.001. Positive values denote higher in GSH in AD while negative values denote higher GSH in control subjects. ROI region of interest
