A majority of suppliers have reported the clone FIB504 to be a monoclonal antibody specific to the human gene, ITGB7, or Integrin subunit beta 7. Other suppliers describe clone FIB504 to be a monoclonal antibody against human CSF2RB, or colony stimulating factor 2 receptor beta common subunit. This antibody clone has been reported to also recognize the mouse ortholog of the target gene. Indicated applications for antibody clone FIB504 include Western blot, flow cytometry, immunofluorescence, and immunoprecipitation.