RCC-9863 cell viability was affected by allicin in a dose- and time-dependent manner. RCC-9863 cells were exposed to allicin at the concentration of 0.016 mg/mL, 0.05 mg/mL, and 0.1 mg/mL for 48 h (A). (B) RCC-9863 cells were treated with 0.05 mg/mL allicin for 24 hours, 48 hours and 72 hours. Cell viability was determined by MTT assay using the spectrophotometer at 550 nm. Data represent the means ± SEM, n=6 independent experiments. *P<0.05, **P<0.01 versus control.