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. 2020 Jun 4;8(6):846. doi: 10.3390/microorganisms8060846

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The effect of exogenously added pyruvate on the stationary phase of growth of S. mutans UA159 wild type and Pta-AckA pathway derivative strains. Wild type (a), Δpta (b), ΔackA (c), KB12 (pta-complemented, (d) and KB034 (ackA-complemented, (e) strains were grown in BHI, supplemented by different concentrations of pyruvate (0, 10 and 40 mM). Optical density at 600 nm was monitored every 30 min at 37 °C using the Bioscreen C lab system. The results are representative of three independent experiments.