Pathway-pathway interactions and gene-pathway relationships. (A) Interactions between pathways of rheumatoid arthritis. Green vertices are responsible pathways and edges are interactions. (B) Relationships between candidate disease genes and corresponding pathways. Orange nodes are responsible pathways, blue nodes are known disease genes, and pink nodes are predicted disease genes.
Zhang et al. BMC Medical Genomics 2010 3:38 doi:10.1186/1755-8794-3-38