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Effect of pEKEx3-based overexpression of gapA and pyc in PUT21 on the production of putrescine (black bar) and N-acetylputrescine byproduct (grey bar). Cells were grown in CGXII medium with 20 g·L−1 glucose and 1 mM isopropyl β-d-1-thiogalactopyranoside (IPTG). Means and standard error of three independent cultivations are shown.
