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Hydrodynamic size, polydispersity index (PDI), and ζ-potential (A,B) ChB NPs; and (C,D) Api@ChB NPs. The numbers are given as mean standard deviation (SD) for ζ-potential (n = 3) and for particle size and PDI (n = 4). Average particle size and data size distribution of prepared samples (E,F) ChB NPs and (G,H) Api@ChB NPs measured by TEM (scale bar = 100 nm).
