Clone 14-4-4S has been reported to be a monoclonal antibody specific to the mouse gene, H2-EA-PS, or Histocompatibility 2, class II antigen E alpha, pseudogene. Other suppliers describe clone 14-4-4S to be a monoclonal antibody against mouse H2-EB1, or histocompatibility 2, class II antigen E beta. Indicated applications for antibody clone 14-4-4S include immunohistochemistry, flow cytometry, and immunoprecipitation.