A portion of amino acids 933-C terminal of CD21 protein was used as the immunogen for the recombinant CD21 antibody.
CD21 also known as complement C3d receptor, Epstein-Barr virus receptor, and complement receptor type 2 (CR2), is a protein that in humans is encoded by the CR2 gene. This protein is involved in the complement system. It binds to iC3b (inactive derivativ