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The effects of the heat-dried extract (HDE) (A) and freeze-dried extract (FDE) (B) on the cell viability in microglial BV2 cells were assessed by the MTT assay. The BV2 cells were treated with various concentration (1, 10, and 100 µg/mL) of GL extracts, and the cell viability was measured. The red line indicates a 70% acceptable range of cell viability.
