CD3

https://doi.org/10.1351/goldbook.12972
Molecule composed of five polypeptide chains associated with the heterodimer T-cell receptor (TCR), forming the T-cell receptor complex (TCR/CD3); CD3 transduces the activating signals when antigen binds to the TCR.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1138 [Terms] [Paper]