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. 2017 Feb 23;7:43338. doi: 10.1038/srep43338

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Relative abundance in June, July and December of bacterial phyla based on (A) 16 S rDNA and (B) 16 S rRNA in the 1.5 meter deep “Adventdalen 2” permafrost samples. The phylum Proteobacteria is separated into the four classes Alpha-, Beta-, Gamma- and Deltaproteobacteria. “Others” represents phyla with average relative abundance <1%. Replicates represent three DNA/RNA extractions from the same core.