Figure 3.

Schema graph of database Δ, ontology <a onClick="popup('http://www.biomedcentral.com/1471-2164/13/S3/S4/mathml/M1','MathML',630,470);return false;" target="_blank" href="http://www.biomedcentral.com/1471-2164/13/S3/S4/mathml/M1">View MathML</a> and type system <a onClick="popup('http://www.biomedcentral.com/1471-2164/13/S3/S4/mathml/M5','MathML',630,470);return false;" target="_blank" href="http://www.biomedcentral.com/1471-2164/13/S3/S4/mathml/M5">View MathML</a>.

Jamil BMC Genomics 2012 13(Suppl 3):S4   doi:10.1186/1471-2164-13-S3-S4