Clone CB11 has been reported to be a mouse monoclonal antibody specific to the human gene, ERBB2, or Erb-b2 receptor tyrosine kinase 2. Other suppliers describe clone CB11 to be a mouse monoclonal antibody against human ACTN1, or actinin alpha 1. Indicated applications for antibody clone CB11 include Western blot, immunohistochemistry, and ELISA.