The Acetyl-Histone H3 (Lys27) (D5E4) XP ® Rabbit mAb (BSA and Azide Free) Antibody from Cell Signaling Technology is a Rabbit Monoclonal antibody to H3 clustered histone 1, and H3C1. This antibody recognizes Homo Sapiens, Human, Mouse, Rat, and Non-Human Primate antigen. The Acetyl-Histone H3 (Lys27) (D5E4) XP ® Rabbit mAb (BSA and Azide Free) Antibody has been shown to work in the following applications: EIA, Immunoassay, ELISA, Flow Cytometry, Immunocytochemistry, Immunofluorescence, and Western Blot.