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. 2012 Nov 15;13(11):R101. doi: 10.1186/gb-2012-13-11-r101

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Copyright ©2012 Zeeuwen et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Differences in microbial community composition between STR0 and STR10 samples. Nodes represent taxa, edges link the different taxonomic levels. The fold increase is calculated as the 2log of the ratio of the relative in males and females (0 = no difference between STR0 and STR10, 1 = twice as abundant in STR10, and so on). The significance is expressed as the P-value of a Mann-Whitney U test of the male and female samples. Note that the relation between node size and total abundance is non-linear.