“…Concerning the regulation mechanism of extrapancreatic glucagon, it has been known that gut GI is inhibited by insulin injection (Matsuyama and Foa, 1974;Vranic et al, 1974) or by somatostatin infusion (Sakurai et al, 1975), but gut GI is promoted by the withdrawal of insulin therapy (Matsuyama and Foa, 1974;Vranic et al, 1974), by the administration of arginine (Mashiter et al, 1975;Matsuyama et al, 1978;Muller et al, 1978), or by the transplantation of hypophysis (Yoshida, 1977 (Botha et al, 1977Ma-tsuyama et al, 1978 reported that the kinetics of the extrapancreatic GI to various stimulants and suppressants was different from that of pancreatic glucagon. However, from our present study, it is concluded that the parasympathetic nervous system might play an important role in the control me.…”