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The effect of the surface charge of liposomes in zeta potential (A) and hydrodynamic diameter or Z-average (B), before (indicated by the letter B in x-axis) and after (indicated by the letter A in x-axis) interaction with a mucin suspension. Fluorescence emission spectra of mucin before interaction with liposomes and after interaction with cationic, anionic, or zwitterionic liposomes are presented in (C) (spectra follow the same color code used in bars of panels (A,B)).
