A majority of suppliers have reported the clone 12G5 to be a mouse monoclonal antibody specific to the human gene, CXCR4, also known as C-X-C motif chemokine receptor 4 and CD184. Other suppliers describe clone 12G5 to be a mouse monoclonal antibody against human SFTPD, or surfactant protein D. Indicated applications for antibody clone 12G5 include Western blot, immunohistochemistry, flow cytometry, immunofluorescence, ELISA, and immunocytochemistry.