Anti-C4A/C4B Antibody

Raised in rabbit, this unconjugated polyclonal reagent targets the complement component proteins C4A and C4B, two closely related isoforms encoded in the human MHC class III region that are generated from C4 during activation of the classical complement pathway. The antibody is supplied at 1 mg/ml in phosphate buffered saline containing 0.05% sodium azide at approximately pH 7.2, and is packaged as a 100 µl vial intended for research use only and validated for Western blot detection across human, mouse, and rat samples. Storage under refrigerated conditions is recommended to preserve binding affinity, and small aliquots help limit freeze-thaw cycles during long-term use. End users include immunology and complement-pathway laboratories profiling classical pathway activation in disease models, transplantation studies, autoimmune screens, and biomarker workups of tissue lysates. Each lot is characterized by Antibodies.com to confirm specificity for the C4A and C4B proteins and to maintain reproducible performance between vials.