Figure 4.

Apoptotic effects of Tan IIA on U-937 cells analyzed by Caspase 3 assay. U-937 cells are treated as described above, stained with Caspase 3-PE (FL-2) and subjected to flow cytometry analysis. Panels (A)-(D) show the histograms of control samples, DMSO-treated samples and Tan IIA treated samples for 12 h or 24 h respectively. Experiments were repeated three times. Bars denote the standard error of the mean.