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Trypan blue cell viability studies. Cells in (A) are exposed to US at 2.4 W/cm2 for 2 min without droplets, and remain viable after treatment. Cells in (B) are exposed to both US at 2.4 W/cm2 for 2 min and a solution of paclitaxel-loaded nanodroplets. Cells in and surrounding the region of the acoustic focus are not viable after treatment.
