The Histone H2A.X (Ser139) Rabbit pAb Antibody from MyBioSource.com is a Rabbit Polyclonal antibody to H2A.X variant histone, and H2AX. This antibody recognizes Human antigen. The Histone H2A.X (Ser139) Rabbit pAb Antibody has been shown to work in the following applications: Western Blot.