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Effect of chitosan hydrochloride or carboxymethyl chitosan addition on particle size, poly dispersity index (PDI) and zeta-potential of hybrid NPs prepared by o/w single emulsion method. (a) particle size, (b) PDI, and (c) zeta-potential of PGA-co-PDL and PLGA hybrid nanoparticles. Data represent mean ± SD, n = 3.
