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. 2019 Feb 1;18:23. doi: 10.1186/s12934-019-1074-4

Fig. 3.

Fig. 3

Comparison of the absorbance spectra obtained from E. coli BL21 (DE3) transformed with pRSF_IPK-mb, pACM-EPAG-BPAG and pUCM-IRS with (++) and without (−−) substrates supplementation. Zoom in of the spectrum without substrates shown in the right upper corner