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. 2019 Nov 28;5(11):e02741. doi: 10.1016/j.heliyon.2019.e02741

Fig. 4.

Fig. 4

The contour plot of the RSM design showing the influence of interaction between gene expression variable. A: interaction of induction time and rhamnose concentration; B: induction time interaction and medium concentration; C: interaction of medium concentration and rhamnose concentration.