Signalway Antibody LLC's MEK1/MEK2(Phospho-Ser217/Ser221) Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Immunohistochemistry, and Western Blot. The MEK1/MEK2(Phospho-Ser217/Ser221) Antibody was generated using Map2k1 as the antigen and it reacts with Human, Mouse, and Rat.