Clone 11C9 has been reported to be a mouse monoclonal antibody specific to the human gene, BCKDK, or Branched chain keto acid dehydrogenase kinase. Other suppliers describe clone 11C9 to be a mouse monoclonal antibody against human MBL2, or mannose binding lectin 2. Indicated applications for antibody clone 11C9 include Western blot, immunohistochemistry, immunofluorescence, and ELISA.