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Detection of ECD-Her2 on the nanoarray. Images of nanopatches on the gold surface (A) and their topographical profiles (B). (C) Mean and SD values of the height measured across the nanopatches at each step of the experiment (light blue, grafting of ssDNA; red, hybridization of VHH–DNA conjugate; and green, 1 nM ECD-Her2 incubation).
