
HY500170 by ABM is SensiStain Anti-C4d, a ready-to-use rabbit monoclonal antibody (clone IHC519) validated for IHC (1:50–1:200) and ELISA. Targets complement C4d, a degradation product of activated complement factor C4b used as a diagnostic marker in transplant pathology for antibody-mediated rejection assessment. Supplied as 0.1 ml in Tris buffer, pH 7.3–7.7.