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. Author manuscript; available in PMC: 2011 Apr 4.
Published in final edited form as: Can J Microbiol. 2010 Jul;56(7):539–547. doi: 10.1139/w10-039

Fig. 3.

Fig. 3

Effects of deletion mutations of mleR (A), mleS (B), or mleP (C) on MLF protection against acid killing of Streptococcus mutans UA159. Cells were exposed to a constant pH of 3.0 with or without 25 mmol/L l-malate. N0, the initial number of colony-forming units per millilitre; N, the number of colony-forming units at time t of acid exposure. Error bars indicate SD, n = 3.