Clone 11H9 has been reported to be a monoclonal antibody specific to the human gene, CTNNB1, or Catenin beta 1. Other suppliers describe clone 11H9 to be a monoclonal antibody against human C3, or complement C3. This antibody clone has been reported to also recognize the mouse ortholog of the target gene. Indicated applications for antibody clone 11H9 include Western blot, immunohistochemistry, flow cytometry, immunofluorescence, ELISA, and immunoprecipitation.