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A) Cell uptake efficiencies of cRGD‐CPN6 toward MDA‐MB‐231 cells pretreated with different endocytosis inhibitors. B) Cell uptake efficiencies of cRGD‐CPN6, CPN30, and cRGD‐CPN30 toward MDA‐MB‐231 cells preblocked with free cRGD. The uptake efficiency without inhibitor treatment or cRGD blocking is arbitrarily set to 100%.
