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. 2015 Mar 25;7(4):2109–2124. doi: 10.3390/nu7042109

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Stacked barplot showing the mean genus level composition of density gradient fractions from independent cultures (3 piglets). Bars labelled ¹³C-Dense represent the mean composition of fractions 4–6 in cultures with ¹³C-sialic acid; ¹³C-Light represents the mean composition of fractions 12–14 in cultures with ¹³C-sialic acid; Control-Light represents the mean composition of fractions 12–14 in control cultures without sialic acid. The bacteria shown are the 40 taxa with the highest mean relative abundance across all samples.