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A) Schematic diagram of QD750-PEG2k-RGD. B) In vitro staining of human breast MCF and human glioblastoma U87MG cells (low and high integrin αvβ3 expression, respectively) using QD750-PEG2k-RGD. C) In vivo NIR fluoresnce imaging of U87MG tumor bearing mice (left shoulder, pointed by white arrows) injected with QD750-PEG2k-RGD (left ) and QD750-PEG2k (right), respectively. Modified with permission from ref. 105. Copyright 2006, American Chemical Society.
