Anti-SERPINB3/4 Antibody

SERPINB3 (squamous cell carcinoma antigen 1) is a serine protease inhibitor linked to tumor progression, inflammatory signaling, and epithelial barrier function. Cross-reactivity with the closely related SERPINB4 broadens its use in studies of squamous cell carcinoma, hepatocellular carcinoma, psoriasis, and chronic lung disease. This rabbit polyclonal reagent is supplied by Antibodies.com as 100 µl of unconjugated IgG at 1 mg/ml in phosphate buffered saline (PBS) containing 0.05% sodium azide at approximately pH 7.3, ready to dilute into standard blocking buffers for blotting workflows. Validated for Western blot detection across human, mouse, and rat samples, the antibody suits laboratories investigating serpin family biology, cancer biomarker expression, and protease-antiprotease balance in cell and tissue models.