United States Biological's Mab Rb x human MEK1/2, phosphorylated (Ser221) Dual Specificity Mitogen-Activated Protein Kinase Kinase 1) (PE) antibody is a Rabbit monoclonal antibody. The Mab Rb x human MEK1/2, phosphorylated (Ser221) Dual Specificity Mitogen-Activated Protein Kinase Kinase 1) (PE) antibody was generated using Map2k1, and MAP2K2 as the antigen. It reacts with Homo Sapiens, Human, Mouse, Rat, and Non-Human Primate. This antibody has been shown to work in applications such as: Flow Cytometry.