Additional file 3.

Vertex degree in PPI networks for genes with and without paralogs. In boxplots of vertex degree, analyzed species were human (A), mouse (B), D. melanogaster (C), C. elegans (D), C. neoformans (E), and A. thaliana (F). In metazoan species (A to D), genes of the ES subsets were previously excluded. Estimated p-values for group comparisons are found in tables G (human and mouse), H (fly and worm) and I (fungus and plant). In boxplots, X and O indicate arithmetic and geometric mean, respectively, whiskers mark percentiles 10 and 90, and protein length for each group is reported as mean ± standard deviation.

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Cancherini et al. BMC Genomics 2010 11(Suppl 5):S11   doi:10.1186/1471-2164-11-S5-S11