Vero-E6 GFP cells were seeded at 104 cells/well in 96-well black plates (PerkinElmer). The following day, cells were incubated, with or without compounds, with 2 μM P-gp inhibitor CP-100356 [47 (link)]. The media was removed 24 h after treatment, and the total well GFP fluorescence was measured using Victor NIVO 5 with 485/535 nm excitation wavelength. The cytotoxic effect of compounds was calculated as a percentage of cell viability with respect to untreated control. Data were analyzed using Prism 9. Version 9.1.2.
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