Figure 1.

Illustration of the connections between hypothetical genes A and B. Each node represents a gene and each edge represents either a physical interaction or functional association. ω is the weight of each connection which in case of protein interactions is 1.

Zhu et al. BMC Systems Biology 2012 6(Suppl 3):S8   doi:10.1186/1752-0509-6-S3-S8