Cell Signaling Technology's Phospho-eIF2alpha (Ser51) (119A11) Rabbit mAb is a Rabbit monoclonal antibody. The Phospho-eIF2alpha (Ser51) (119A11) Rabbit mAb Antibody was generated using EIF2S1 as the antigen. It reacts with Homo Sapiens, Human, Mouse, Rat, Drosophila/Arthropod, and Non-Human Primate. This antibody has been shown to work in applications such as: Precipitation, Immunohistochemistry, Immunohistochemistry - fixed, Immunoprecipitation, and Western Blot.