Quantitative analysis of ABCG2 expression. ABCG2 expression was quantified as the mean fluorescence intensity (MFI) shift (ratio of MFI of CD338-PE antibody and isotype control).  The experimental points represent mean values from three replicate experiments, with standard deviations. * denotes significant change in ABCG2 expression (P<0.05) between K562 cells and cells expressing various levels of ABCG2 (K562/ABCGCL10, K562/ABCGCL1).  
  Part of: Mlejnek P, Dolezel P, Ruzickova E (2017) Drug resistance of cancer cells is crucially affected by expression levels of ABC-transporters. BioDiscovery 20: e11211. https://doi.org/10.3897/biodiscovery.20.e11211