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. 2019 Oct 9;11(10):1632. doi: 10.3390/polym11101632

Figure 2.

Figure 2

Effect of cryoprotectant on particle size of nanoparticles prepared; (a) PLGA nanoparticles (NPs), (b) chitosan-coated PLGA NPs. *: Fresh formulation after centrifugation and dispersing in 1 mL trehalose solution (5% w/v).