The MEK1/2 (L38C12) Mouse mAb Antibody from Cell Signaling Technology is a Mouse Monoclonal antibody to Map2k1, and MAP2K2. This antibody recognizes Homo Sapiens, Human, Mouse, Rat, and Non-Human Primate antigen. The MEK1/2 (L38C12) Mouse mAb Antibody has been validated for the following applications: Flow Cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.