title: Brain peptides--new synaptic messengers?
mesh_terms: D001921:Brain / Q000502:physiology*; D002450:Cell Communication; D004723:Endorphins / Q000502:physiology; D006801:Humans; D010455:Peptides / Q000502:physiology*; D013373:Substance P / Q000502:physiology; D013569:Synapses / Q000502:physiology*; D009435:Synaptic Transmission
chemical_list: D004723:Endorphins; D010455:Peptides; D013373:Substance P