Figure 1

ABCB1 expression assessed by flow cytometry for cells stained with ABCB1 antibody, isotype control and no staining (autofluorescence). (A) Histograms of HEKcontrol, HEKWT and HEK1199A. (B) Histograms of HEKcontrol, HEKWT, HEKCGT and HEKTTT. FITC Fluorescein isothiocyanate.