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. 2019 Jun 19;18:112. doi: 10.1186/s12934-019-1161-6

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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 — Probiotics supplementation improved the digestive enzyme activity of duodenum, jejunum, and ileum. a–c The levels of α-amylase, lipase, and trypsin in the small intestine. The data are expressed as the mean ± SD. *P < 0.05, **P < 0.01