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(A) Fluorescence images of cellular uptake of conjugates at selected time points. (B) Cellular uptake kinetics as determined by flow cytometry (Supplementary Figure 5). (C) Quantification of FITC-positive cell populations as determined by flow cytometry. (D) Colocalization of FITC-G4-FA with early endosomes (Rab5) observed in FR-high cell line (T98 cells) at 24 h.
FR: Folate receptor.
