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Insertion of the defensin, followed by QCM measurements (A). The augmentation of −Δf/ν (where ν = 3 and f = 15 Hz) at the end of defensin deposition as well as the increase in the thickness of the film suggest protein adsorption. (B) Insertion of the defensin followed by streaming potential measurements. The surface charge stays anionic after the adsorption of the defensin.
