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FBG1 production in response to different induction strategies. (A) Volumetric production (mg/L). (B) specific production (mg/g). (C) specific production rate (mg/g/h). Time zero indicates the initiation of methanol addition. DO-stat strategy (filled green diamond), μ-stat strategy (open blue circle), m-stat strategy (open black triangle), co-stat (filled red square). Asterisk indicates the two-group have significant difference (∗∗∗P < 0.001).
