A majority of suppliers have reported the clone 17A2 to be a rat monoclonal antibody specific to the mouse gene, CD3E, also known as CD3 antigen, epsilon polypeptide and CD3. Other suppliers describe clone 17A2 to be a rat monoclonal antibody against mouse CD3G, or CD3 antigen, gamma polypeptide. Indicated applications for antibody clone 17A2 include immunohistochemistry, flow cytometry, and immunoprecipitation.