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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Small. 2019 May 8;15(25):e1901397. doi: 10.1002/smll.201901397

Table 2.

Various formulation parameters and levels of Minitab design.

Level Code A Gelatin concentration (%) B W/O (v/v) C PLGA concentration (%)
High level 1 8.5 1 / 3.2 2.5
Medium level 0 7.5 1 / 2.4 2.0
Low level −1 6.5 1 / 1.6 1.5