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Schematic model of the deposition manner and chemical bonding state of poly(ethylene glycol) (PEG) by immersion and electrodeposition. (Modified from Tanaka Y, Doi H, Iwasaki Y, Hiromoto S, Yoneyama T, Asami K, et al. Mater Sci Eng C-Biom Supramol Syst 2007;27:206-12, with permission of Elsevier) [21].
