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. 2014 Aug 7;5:409. doi: 10.3389/fmicb.2014.00409

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Copyright © 2014 Piceno, Reid, Tom, Conrad, Bill, Hubbard, Fouke, Graff, Han, Stringfellow, Hanlon, Hu, Hazen and Andersen.

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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Chromatograms for volatile fractions of North Slope oil from the Schrader Bluff reservoir (SB1 and SB2 are A,B, respectively), the Kuparuk reservoir (K1 and K2 are C,D, respectively) and the Sag River reservoir (E).