Research Article

Synergistic Cytotoxicity between Elephantopus scaber and Tamoxifen on MCF-7-Derived Multicellular Tumor Spheroid

Figure 3

Flow cytometric analysis of phosphatidylserine externalization on MCTS culture after 4 days of treatment. E. scaber ethanol extract 60 μg/mL (ES60), tamoxifen citrate 3.125 μg/mL (TC3), and tamoxifen citrate 6.25 μg/mL (TC6). The results are presented as means ± SEM of three independent experiments. Viable—AnnV−/PI−; early apoptosis—AnnV+/PI−; late apoptosis—AnnV+/PI+; dead—AnnV−/PI+; AnnV represents annexin V, PI represents propidium iodide, and +/− represents positive/negative observation of the staining. ∗Statistical significance () between control cells and treatment groups.