vertebrate Homologous Organ Groups

vHOG is a multi-species anatomical ontology for the vertebrate lineage, developed as part of the Bgee project.
The mapping to species-specific anatomical ontologies is provided as a separated file:
http://bgee.unil.ch/download/organ_association_vHOG.txt
This mapping represents homology-strict relationships, in the sense of HOM:0000007 "historical homology". Each mapping has been manually reviewed, and we provide confidence codes and references when available.