Fig. 2. The viability of primary mouse hepatocytes was determined by the MTT assay.

(A) Cells were exposed to curcumin at different concentrations for 24 h. (B) Cells were exposed to 5, 25, and 50 µM curcumin for different time periods. Each point and vertical bar presents the mean ± standard deviation of three independent experiments. ^**p < 0.01.