Figure 1From: Examination of the relationship between essential genes in PPI network and hub proteins in reverse nearest neighbor topologyAn example of R1NN and R2NN topology generated from a toy weighted PPI network. Numbers beside edges represent edge weights. The direction of the edges indicates that on node (edge destination) is another node (edge origin)'s nearest neighbor. The R1NN and R2NN from the PPI network were given.Back to article page