Clone WM59 is a mouse monoclonal antibody specific to the human gene, PECAM1, or Platelet and endothelial cell adhesion molecule 1. Another name for the gene is CD31. This antibody clone has been reported to also recognize the primate ortholog of the target gene. Indicated applications for antibody clone WM59 include immunohistochemistry, flow cytometry, immunofluorescence, immunocytochemistry, and immunoprecipitation.