Figure 3.
Apoptosis analysis by flow cytometry. NCI-H460 cells were treated with the indicated concentrations of shikonin for 24 h. Changes in cell apoptosis distribution were assessed by annexin V fluorescein isothiocyanate (AV FITC)/propidium iodide (PI) staining and flow cytometry. The percentages of apoptotic (double-stained) cells are indicated.