Inhibition of cell viability by carnosol.

<p>Exponentially growing MDA-MB-231 were treated with vehicle (DMSO) and the indicated concentrations of carnosol for 24 h and 48 h. Viable cells were assayed with the Muse Cell Analyzer as described by the manufacturer. Data represent the mean ±SEM of at least 3 independent experiments. Student's t test was performed to determine the significance (*<i>p</i><0.05, **<i>p</i><0.01 and ***<i>p</i><0.005).