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Cell binding and uptake by RLP-ELP diblock nanomaterials. (A) Cellular uptake of RLP-ELP unimers, spherical micelles, and worm-shaped micelles with an integrin-targeting Fn3 protein domain. The increased avidity and worm-like structure of the micelle promoted its ability to enter the cell. (B) Shape-dependent avidity of RLP-ELP diblocks. Multivalency increased the affinity of the nanoparticles for its target by decreasing the off-rate. Adapted from [55].
