The Phospho-Rb (Ser807/811) (D20B12) XP ® Rabbit mAb (BSA and Azide Free) Antibody from Cell Signaling Technology is a Rabbit Monoclonal antibody to RB1. This antibody recognizes Homo Sapiens, Human, Mouse, Rat, and Non-Human Primate antigen. The Phospho-Rb (Ser807/811) (D20B12) XP ® Rabbit mAb (BSA and Azide Free) Antibody has been shown to work in the following applications: EIA, Immunoassay, ELISA, Flow Cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.