Positive Samples: mouse brain, mouse kidney, rat brain rat kidney Immunogen sequence: LRPRILLCAP PARPAPSAPP APPAPPESTV RPAPPTRPGE SSYSSISHVI YNNHQDSSAS PRKRPGEATA ASSEIKALQQ TRRLLANARE RTRVHTISAA F. Basic helix-loop-helix (bHLH) transcription factors pla