Leading Biology's CPA2 Rabbit pAb (APR20922N) is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The CPA2 Rabbit pAb (APR20922N) Antibody was generated using carboxypeptidase A2, and CPA2 as the antigen and it reacts with Human, Mouse, and Rat.