Immunoprecipitation of Cdk4 from HeLa whole cell lysate using Cdk4 (DCS-35): sc-23896 (mouse monoclonal antibody) followed by Western blot analysis using Cdk4 (C-22)-G: sc-260-G (goat polyclonal antibody). Note presence of Protein A/G band using Protein A/G PLUS-Agarose: sc-2003 conventional IP matrix (A) as compared to their absence using ExactaCruz A: sc-45038 (B).