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. 2016 Jun 9;11(6):e0157001. doi: 10.1371/journal.pone.0157001

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© 2016 Jiang 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 credited.

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Fig 3 — Young grass carps were fed for 8 weeks with diets with different doses of histidine, and then exposed to 0.7 mg Cu/L water for 4 additional days. Values are expressed as the mean with standard deviation and are represented by vertical bars (n = 6). Superscript (^a) indicates a significant (P < 0.05) difference over Ctrl/Ctrl values. Superscript (^a,b) indicates a significant (P < 0.05) difference over Ctrl/Ctrl and Ctrl/Cu values.