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This antibody recognizes the same epitope as
?clone?

17A2.

The CD3 protein is a T-cell marker, a complex of four structurally distinct membrane glycoprotein isoforms, 20-50 kDa, comprising extracellular, transmembrane and intracellular domains. CD3 is associated with an heterodimer creating the T-cell receptor （TCR）. The CD3 complex is responsible for mediating signal transduction to the internal environment upon antigenic recognition by TCR, causing T-cell proliferation and release of cytokines.