bHLHb27 antibody, Class B basic helix-loop-helix protein 27 antibody, DNA binding protein inhibitor ID 4 antibody, DNA binding protein inhibitor ID4 antibody, DNA-binding protein inhibitor ID-4 antibody, ID 4 antibody, Id4 antibody, ID4_HUMAN antibody, IDB4 antibody, Inhibitor of DNA binding 4 antibody, Inhibitor of DNA binding 4 dominant negative helix loop helix protein antibody