近年来神经化学迅速进展,已能从机体分离提取肽并确定其结构和化学合成。应用对合成肽的抗体的放射免疫测定法,建立了免疫组织学,后者正在成为研究肽的重要手段。用免疫化学方法研究体内的肽,从前认为仅存在于中枢神经系统(CNS)的肽也见于消化道,而产生于消化道的肽已在 CNS 被证实。 In recent years, neurochemical rapid progress has been able to extract peptides from the body and determine its structure and chemical synthesis. Immunohistochemistry was established using radioimmunoassay of synthetic peptide antibodies, which is becoming an important tool for studying peptides. Peptides in the body have been studied immunochemically, and peptides previously thought to exist only in the central nervous system (CNS) are also found in the digestive tract, whereas peptides produced in the digestive tract have been identified in the CNS.