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Development of the biotinylated graft. (A) Schematic diagram illustrates the preparation of the biotinylated graft with an amine-coupling reaction. (B) Schematic diagram illustrates the preparation of the biotinylated graft by coating with poly (2-hydroxyethyl methacrylate) (pHEMA). (C) Quantification of the amounts of biotin on the graft surfaces.
