during the past few years increasing interest has been focused on the role of gamma-aminobutyric acid (GABA) outside the central nervous systems (CNS).Biochemical, pharmacological, histochemical, physiological approaches have all been employed to investigate the role of GABA in themammalian periphery. The International Symposium on Peripheral GABAergic Mechanism held in Rome, July 1990, was devoted to gather scientists from allover the world in order to summarize and sythesize their most recent results and conceptions on the significance of GABA outside the CNS. Written in a thought-provoking...