Additional file 4.

Figure S2. Network properties of the SVN. A: The log-log-plot of the degree distribution of the SVN follows a power-law (γ = 1.32; R2 = 0.69) and therefore attributes the SVN to be scale-free and, thus, non-random. B: The modular structure of the SVN was confirmed by the topological coefficient which follows a power-law distribution on a log-log-scale. When considering the two node types separately, in both cases a scale-free topology can be identified: C: disease nodes (γ = 0.97; R2 = 0.71) and D: locus nodes (γ = 2.98; R2 = 0.93).

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Arnold et al. BMC Genomics 2012 13:490   doi:10.1186/1471-2164-13-490