Cell Signaling Technology's IgM (E8M1B) XP ® Rabbit mAb (BSA and Azide Free) is a Rabbit monoclonal antibody. The IgM (E8M1B) XP ® Rabbit mAb (BSA and Azide Free) Antibody was generated using Ighm as the antigen. It reacts with Mouse. This antibody has been shown to work in applications such as: Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.