Leading Biology's ErbB3/HER3 Rabbit pAb (APR20539N) is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Immunohistochemistry. The ErbB3/HER3 Rabbit pAb (APR20539N) Antibody was generated using ERBB3 as the antigen and it reacts with Mouse, and Rat.