Clone OTI4B6 has been reported to be a mouse monoclonal antibody specific to the human gene, GSTP1, or Glutathione S-transferase pi 1. Other suppliers describe clone OTI4B6 to be a mouse monoclonal antibody against human DEF8, or differentially expressed in FDCP 8 homolog. Indicated applications for antibody clone OTI4B6 include Western blot and immunofluorescence.