Cell Signaling Technology's HLA-DRA (E9R2Q) XP ® Rabbit mAb (Alexa Fluor ® 647 Conjugate) is a Rabbit monoclonal antibody. It reacts with Homo Sapiens, Human, and Non-Human Primate. This antibody has been shown to work in applications such as: Immunohistochemistry, and Immunohistochemistry - fixed.