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Summary The CRA1 (AER37) monoclonal antibody reacts with the Fc epsilon R1 alpha subunit on a region that does not overlap the region of the IgE binding site, thus it does not compete withIgE for the receptor binding. Since the CRA2 (AER24) monoclonal antibody reacts with the IgE binding site on Fc epsilon R1 alpha, it competes with IgE for the receptor binding. Combining the two antibodies, one can quantitatively measure the amounts of the IgE-bound Fc epsilon R1 alpha.

Summary This antibody recognizes TCR alpha/beta, the dominant subtype of T cell receptor expressed in peripheral blood.

Summary This antibody recognizes a monomorphic epitope on ovine MHC class II DR molecules.

Summary Clone AK7 inhibits cell attachment to collagen.

Summary Monoclonal antibody 502-57 has been raised against the extracellular domain of mouse nectin-2.

Summary This antibody 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.