Thermo Fisher Scientific's p21 Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Immunohistochemistry, Immunohistochemistry - fixed, Immunohistochemistry - frozen, Immunoprecipitation, and Western Blot. The p21 Antibody was generated using CDKN1A as the antigen and it reacts with Homo Sapiens, Human, Mouse, and Rat.