Figure 1.

Graph of relationships and hub of hubs organization. (a) A conceptualization of the semantic graph of interrelationships among biological identifiers, with boxes representing instances of biological identifiers (originating database names given inside) and different edge types representing different kinds of relationships (b) LinkHub as an enabler of an efficient "hub of hubs" organization of biological data. The different colors represent different labs, organizations, or logical groupings of data resources.

Smith et al. BMC Bioinformatics 2007 8(Suppl 3):S5   doi:10.1186/1471-2105-8-S3-S5