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Confocal microscopy images of live αvβ3‐expressing human renal cell carcinoma 786‐O cells after exposure to conjugates 2 (A), 4 (B) and free sCy5 (C) (1 μmol L−1, exposure time=2 h). Accumulation at the cell membrane was detected only upon exposure to conjugate 2. No fluorescent signal was detected in the intracellular compartments for all compounds tested. Blue: Hoechst; Red: NIR dye.
