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Cell morphology of CAL27 (a) and SCC15 (b) after treatment with LfcinB(20–25)4 for 1, 12, or 24 h. The STA concentration used was 0.86 μM (0.4 μg/mL) for CAL27 and 1.29 μM (0.6 μg/mL) for SCC15. Photomicrographs were taken with a phase-contrast microscope.
