"relates ?hres to ?pres, where ?hres is a residue in an HLA molecule (chain) and ?pres is a residue in the short peptide chain, when atoms (other than hydrogen) in ?hres and ?pres occur within 5 angstroms of one another."^^ . "@@the design around this term changed in a way to make the URI a misnomer@@"^^ . . "within 5 angstroms"^^ . "@@water is excluded too, I think"^^ . .