MyBioSource.com's Retinoblastoma (Rb) phosphothreonine 826 Polyclonal Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Retinoblastoma (Rb) phosphothreonine 826 Polyclonal Antibody was generated using p105-Rb, pRB, and RB1 as the antigen and it reacts with Human.