Cells were treated with nanoparticles (50 nM anti-miR, 50 nM siRNA) for 48 h. Cells were stained with 2 μg/mL of DAPI (4′, 6-diamidino-2′-phenylindole dihydrochloride) and observed under EVOS xl fluorescence microscope (Thermo, US). Apoptotic nuclei (condensed and fragmented morphology) were counted and presented as a percentage of total nuclei per observation field.
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