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. 2017 Jul 10;8:1256. doi: 10.3389/fmicb.2017.01256

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Copyright © 2017 Hua, Zhou, Yang, Shi, Xu, Wang, Shi, Zhao, Sun, Ruan, Jiang and Yu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Spontaneous point mutations in ptk resulted the misregulation of capsular exopolysaccharide production and higher motility. (A) Colony morphology on MH plates. (B,C) Capsules of XH506 and XH507 (ptk G667D) were analyzed by India ink staining. (D) Spontaneous ptk mutants showed higher motility than the wild type. The y-axis indicates the measurement of diameter (mm) of the cell halos of each isolate pairs harbored ptk mutations in Group B. The data are represented as the means ± SD of experiments that were performed in triplicate.