Clone C5 has been reported to be a mouse monoclonal antibody specific to the human gene, CRP, or C-reactive protein. Other suppliers describe clone C5 to be a mouse monoclonal antibody against human TNNI3, or troponin I3, cardiac type. Indicated applications for antibody clone C5 include Western blot, immunohistochemistry, ELISA, immunocytochemistry, and immunoprecipitation.