Features that favor the epitope class. Here a feature is represented by two nodes connecting with a solid line. Two nodes with patterns XY and YZ form a complete triangle XYZ, while patterns X and XY form only a contacting residue pair XY. The blue-filled nodes are single residues in favor of the epitopes while the gray-filled nodes are not.
Zhao et al. BMC Bioinformatics 2012 13(Suppl 17):S20 doi:10.1186/1471-2105-13-S17-S20