RASFs were incubated with various concentrations of Antcin K for 24 h at 37°C and then with BCECF-AM-labeled THP-1 cells for 1 h at 37°C. Non-adherent cells were removed by PBS washing. Attached THP-1 cells in RASFs were counted using a Nikon Eclipse Ti-S Fluorescent microscope (Nikon, Japan) with images captured at 10× magnification. Captured images were counted and quantified by MacBiophotonics ImageJ software (v1.51, National Institutes of Health, Bethesda, MD, USA) (19 (link), 20 (link), 27 (link)).
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