Fig. 3From: Inferring active regulatory networks from gene expression data using a combination of prior knowledge and enrichment analysis a A graph of a subset of the Human Reference Network containing regulator and gene-target interactions as compiled by TRED and TFactS only. b Node-degree rank distribution of this network shows an extensive linear relationship on a double logarithmic scale which is a hallmark of “small world”, scale-free networks. The shape and exponent of this plot do not change significantly when the complete reference network is taken into accountBack to article page