Fig. 5From: Enhancement of bleomycin production in Streptomyces verticillus through global metabolic regulation of N-acetylglucosamine and assisted metabolic profiling analysisa Comparative analysis of biomarkers associated with bleomycin production between medium I and medium II at 48 h, 84 h and 108 h. b, c Effects of exogenous addition of key amino acids in medium II on bleomycin A2 (b) and B2 (c) production at various times. The black dashed lines represented the productions of bleomycin A2 and B2 in medium II, which was used as the controlBack to article page