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(A) CLSM images and (B) flow cytometry data of the in vitro cellular association of CK-PAMAM-PTX, Cys-PAMAM-PTX, and CRGDK + CK-PAMAM-PTX in MDA-MB-231 cells. (C) Fluorescence intensity of CK-PAMAM-PTX, Cys-PAMAM-PTX, and CK-PAMAM-PTX in cells quantified by flow cytometry: (a) CK-PAMAM-PTX, (b) Cys-PAMAM-PTX, and (c) CRGDK + CK-PAMAM-PTX.
