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. 2019 Apr 1;14:2267–2280. doi: 10.2147/IJN.S194934

Figure 2.

Figure 2

Response surface models showing the influence of the factors on the responses.

Notes: Three dimensional response surface plots showing the effects of (X1) total lipids concentration (%), (X2) ratio of liquid lipid to total lipid (%), and (X3) surfactant concentration (%) on the responses of Y1 (A), Y2 (B), and Y3 (C). Y1 is the response of the mean particle size, Y2 of entrapment efficiency, and Y3 of drug loading.