Fig. 3From: Identification of novel tylosin analogues generated by a wblA disruption mutant of Streptomyces ansochromogenes Bioassays and HPLC analysis of the fermentation broth from S. ansochromogenes 7100 and ΔwblA. Bioassays of the fermentation broth against Staphylococcus aureus (a) and Bacillus cereus (b), and the HPLC analysis (c). (I): ΔwblA, (II): S. ansochromogenes 7100, (III): complemented strain by integrating a copy of wblA into the chromosome of ΔwblA, (IV): the control strain by integrating pSET152 vector into the chromosome of ΔwblA. Arrows indicate the new appeared peaks on HPLC produced by ΔwblABack to article page