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Glucose concentration, cell growth and rifamycin SV production of U32 in BK after different glucose supplementation strategies
(A) Adding 1 mL glucose solution once at 48 h. (B) Adding 2 mL glucose solution once at 48 h. (C) Repeatedly adding 1 mL glucose solution at 48, 60, 72, 84, 96 and 108 h. ‘+’ means supplying 1 mL glucose solution, ‘++’ means supplying 2 mL glucose solution. Data are shown as the mean ± SD (n = 3).
