Active Motif's RNA pol II CTD phospho Tyr1 antibody (mAb) (Clone 3D12) was raised in a Rat host. It has been validated for use in Chromatin Immunoprecipitation, Immunocytochemistry, Immunofluorescence, Immunoprecipitation and Western blot; it has been shown to react with Human samples, but it is predicted that it will react with a wide range of sample types. For more complete and up-to-date information, please visit the Active Motif website.