Expression patterns of the Drosophila neuropeptide CCHamide-2 and its receptor may suggest hormonal signaling from the gut to the brain. oleh Shizhong Li, Teresa Torre-Muruzabal, Karen C Søgaard, Guilin R Ren, Frank Hauser, Signe M Engelsen, Mads D Pødenphanth, Annick Desjardins, Cornelis J P Grimmelikhuijzen