FOXO1a Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human Application:Western blot, Immunoprecipitation Western blotting (1:500 – 1:2,000) and immunoprecipitation. However, the optimal concentrations should be determined individually. The antibody recognizes human FOXO1a. HEK293 cell lysate can be used as a positive control. Reactivity to other species has not been tested.