The CD3D protein is an important component of the TCR-CD3 complex on T lymphocytes and is critical for adaptive immune responses. After APC activates TCR, CD3D, together with CD3E, CD3G and CD3Z, transmits signals through ITAM and activates downstream pathways. CD3D-CD3E Heterodimer Protein, Rhesus Macaque (HEK293, hFc) is a recombinant protein dimer complex containing Rhesus Macaque-derived CD3D-CD3E Heterodimer protein, expressed by HEK293 , with N-hFc.