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. 2022 Jun 3;414(21):6309–6326. doi: 10.1007/s00216-022-04131-2

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Fig. 2 — Protein expression via mCherry fluorescence (A) and absorbance at 600 nm due to E. coli cell growth (B) of the BL21 (DE3) for induced and non-induced cultures. One millimolar IPTG added to induce protein production at t = 0. Protein production begins 1 h after the induction