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. 2015 Mar 16;10(3):e0116013. doi: 10.1371/journal.pone.0116013

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© 2015 Gong et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 2 — C: Control; W: Warming; N: N addition; WN: Warming plus N addition. Vertical bars represent the standard error of the mean (n = 6). Different lowercase letters indicate significant differences (P < 0.05) between treatments.