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. 2019 Mar 11;10:454. doi: 10.3389/fmicb.2019.00454

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Copyright © 2019 Liu, Xue and Yang.

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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The effect of DNA extraction kits on the OTUs occurrence. (A) Venn diagram showing the number of OTUs that shared and unique by different DNA extraction kits. (B) The occurrence (that is, the number of DNA extraction kits where an OTU was found) based on niche breadth analysis for all the bacterial and eukaryotic OTUs, respectively. AT, always abundant taxa; CAT, conditionally abundant taxa; CRAT, conditionally rare and abundant taxa; CRT, conditionally rare taxa; MT, moderate taxa; RT, always rare taxa.