摘要
Glucagon is a polypeptide hormone of 29 amino acids which is synthesized by the α-cell of the islets of Langerhans of pancreas. One of its effects is to cause glycogenolysis and an increase in blood suger. In recent years it has been found that glucagon has several biological effects including the effect on contractility in cardiac muscle. Much attention has been drawn to this Subject. Since the strueture of glucagon is rather flexible, it is readily attcked by
