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QCM-D monitoring for testing the selectivity of SPI (A), 11S (B), 7S (C) against on (Ⅰ) GM and (Ⅱ) DG and MC. The thickness of GM, DG and MC adsorbed on SPI, 11S, 7S (D). Different letters above each column represent that data are significantly different (p < 0.05).
