Clone 1A4 + ACTA2/791 is a mouse monoclonal antibody specific to the human gene, ACTA2, or Actin alpha 2, smooth muscle. This antibody clone has been reported to also recognize the rat ortholog of the target gene. Indicated applications for antibody clone 1A4 + ACTA2/791 include immunohistochemistry, flow cytometry, and immunofluorescence.