Anti-PIGR Antibody [7C1] - Identical to Abcam (ab170321)

The Anti-PIGR Antibody [7C1] from Antibodies.com is a rat monoclonal reagent that recognises the polymeric immunoglobulin receptor, a transmembrane glycoprotein that mediates transcytosis of secretory IgA and IgM across mucosal epithelial barriers. Clone 7C1 (IgG1) detects the target at approximately 90 kDa by western blot and is validated for immunohistochemistry on formalin-fixed, paraffin-embedded tissue. Reactivity has been confirmed in human and mouse samples; common positive controls include stomach mucosa, liver, and intestinal epithelium where PIGR expression is physiologically abundant. Aliquot the antibody and store frozen at -20°C, avoiding repeated freeze-thaw cycles, and ship refrigerated on blue ice to preserve reagent activity.