Cytotoxicity Study of Cyclopentapeptide Analogues of Marine Natural Product Galaxamide towards Human Breast Cancer Cells

Figure 5

Nuclear morphology of MCF-7 cells treated with 0, 2.5, 5.0, and 10.0 μg/mL galaxamide (a) and compound 3 (b) for 48 h was determined by staining with Hoechst 33258. Arrows indicate apoptotic cells.