System level organization of breast cancer network.

<p>(a) Organization of modules/sub-modules at various levels (indicated by various concentric circles) and arrows show sub-modules constructed from previous modules. (b) Plots of modularity and LCP-correlation per node as a function of level of organization. (c) Popularity rankings of the first fifty leading hubs in the complete network: the plot also shows unpredictability of the these hubs at various levels of organization. Identification of <i>key regulators</i> of breast cancer network.