Cell Signaling Technology's PD-1 (Intracellular Domain) (D4W2J) XP ® Rabbit mAb (BSA and Azide Free) is a Rabbit monoclonal antibody. The PD-1 (Intracellular Domain) (D4W2J) XP ® Rabbit mAb (BSA and Azide Free) Antibody was generated using PDCD1 as the antigen. It reacts with Homo Sapiens, and Human. This antibody has been shown to work in applications such as: Flow Cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.