Creative Biolabs' Rabbit Anti-Human Complement C4B Polyclonal Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Rabbit Anti-Human Complement C4B Polyclonal Antibody was generated using C4B, complement component 4B (Chido blood group), copy 2, and C4B_2 as the antigen and it reacts with Human.