Clone SPM160 has been reported to be a mouse monoclonal antibody specific to the human gene, ACTA1, or Actin alpha 1, skeletal muscle. Other suppliers describe clone SPM160 to be a mouse monoclonal antibody against human ACTA2, or actin alpha 2, smooth muscle. Suppliers have reported additional species reactivites for the target of this clone, including rabbit and rat. Indicated applications for antibody clone SPM160 include Western blot, immunohistochemistry, flow cytometry, immunofluorescence, immunocytochemistry, and immunoprecipitation.