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. 2019 Dec 20;10:2910. doi: 10.3389/fmicb.2019.02910

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Copyright © 2019 Chen, Wu, Chen, Li, Li, Zhang, Pang, Wang, Zhao and Shen.

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) and the copyright owner(s) 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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Phylogenetic trees of the groEL gene fragments cloned by the primer pair Spa146f-Spa525r and Spa93f-Spa525r from the saliva of individual human subjects and those of known Streptococcus species. The sequences cloned with Spa146f-Spa525r are labeled with blue dots, and those cloned with Spa93f-Spa525r are labeled with orange dots. Bootstrap values greater than 50% are indicated at the nodes. (A) The tree of sequences cloned from the saliva of human subject SH3; (B) The tree of sequences cloned from the saliva of human subject SH8; (C) The tree of sequences cloned from the saliva of human subject SP13; (D) The tree of sequences cloned from the saliva of human subject SP24; (E) The tree of sequences cloned from the saliva of human subject SP15; (F) The tree of sequences cloned from the saliva of human subject SH10.