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. 2021 Aug 18;607:121023. doi: 10.1016/j.ijpharm.2021.121023

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Fig. 6 — Response 3D plot for the interaction of critical process parameters on zeta potential (Y₃). (A) The interaction (AB) between the PLGA and drug amounts decreased the absolute value of FH-LPH zeta potential. (B) The interaction (BC) between the drug amount and stirring speed increased the absolute value of FH-LPH zeta potential.