Anti-CD3 epsilon (activation epitope) FITC

The mouse monoclonal antibody APA1/1 recognizes an activation-dependent intracellular epitope of CD3 epsilon. Exposure of the epitope precedes CD3 phosphorylation and recruitment and activation of ZAP70, which initiates the signaling cascade produced by T-cell activation. APA1/1 provides the earliest known marker for TCR-mediated T cell activation.

[T-cell surface glycoprotein CD3 epsilon chain; T-cell surface glycoprotein CD3 epsilon chain; T-cell surface glycoprotein CD3 epsilon chain; CD3e molecule; T-cell surface antigen T3/Leu-4 epsilon chain; CD_antigen: CD3e]