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. 2015 Mar 3;4:e9. doi: 10.1017/jns.2014.71

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© The Author(s) 2015

The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution-NonCommercial-ShareAlike licence <http://creativecommons.org/licenses/by-nc-sa/3.0/>. The written permission of Cambridge University Press must be obtained for commercial re-use.

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Fig. 2. — Effects of coffee polyphenol extract (CPE) on active glucagon-like peptide-1 (GLP-1) secretion from NCI-H716 cells. Cells were incubated for 2 h with CPE (0–0·1 %). Values are means (n 14–16 per group), with standard errors represented by vertical bars. A one-way ANOVA followed by Dunnett's post hoc tests was used when comparing values between the control (0 % CPE) and experimental groups. Mean value was significantly different from that of the control (0 % CPE) group: ** P < 0·01, *** P < 0·001 (Dunnett's test).