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. 2019 Sep 10;10:69. doi: 10.1186/s40104-019-0379-9

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Effects of dietary putrescine supplementation on proinflammatory cytokine expression in the jejunal mucosa of piglets. a The mRNA level of TNF-α. b The mRNA level of IL-8. c The mRNA level of IL-6. d The mRNA level of NF-κB p65. e The protein level of phospho-NF-κB p65. f The protein level of total-NF-κB p65. Values are means ± SE, n = 6. Means with different letters are different (P < 0.05). Ctrl, control; IL-6, interleukin 6; IL-8, interleukin 8; NF-κB p65: nuclear receptor kappa B p65 subunit; Put, putrescine dihydrochloride; TNF-α, tumor necrosis factor α