Clone M3 has been reported to be a mouse monoclonal antibody specific to the human gene, MCM7, or Minichromosome maintenance complex component 7. Other suppliers describe clone M3 to be a mouse monoclonal antibody against human PARP1, or poly(ADP-ribose) polymerase 1. Indicated applications for antibody clone M3 include Western blot, ELISA, immunocytochemistry, and immunoprecipitation.