1XIW:
reference: Crystal structure of a human CD3-{epsilon}/{delta} dimer in complex with a UCHT1 single-chain antibody fragment., Arnett KL, Harrison SC, Wiley DC, Proc Natl Acad Sci U S A 2004 Nov 16;101(46):16268-16273. Epub 2004 Nov 8. PMID: 15534202

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).