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Measurement of cell viability. (A) BMMs were cultured with M-CSF (30 ng/ml) and various concentrations of ZnSO4 for 4 days. (B) RAW264.7 cells were cultured with various concentration of ZnSO4 for 24 s. Cell viability was measured using EZcytox cell viability assay kits. Data are presented as the mean ± S.D. of three independent experiments. *P < 0.05 compared to control.
