The cell suspension was stained with the lipophilic dye FM4-64 (InvitrogenTM) at 1 µg/mL and the DNA dye 4,6-diamidino-2-phenylindole (DAPI) (Sigma) at 1 µg/mL, and incubated in dark for 20 min. Cells were then washed with PBS by pelleting at 6000 × g for 2...