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引言在大白鼠和其它动物的许多组织中,焦骨酰基—组氨酰—脯氨酸酰胺三肽(促甲状腺素释放激素;TRH)因许多酶的存在而被降解。且已揭示,许多酶在控制多缩氨基酸激素分泌方面可能起重要作用。现已确定某些酶存在于血浆和大脑的各个部位。在大白
INTRODUCTION Pyrocyoyl-histidyl-prolinamide tripeptides (thyrotropin-releasing hormone; TRH) are degraded by the presence of many enzymes in many tissues of rats and other animals. And it has been revealed that many enzymes may play an important role in the control of the secretion of multi-amino acid hormones. It has been established that certain enzymes are present in various parts of the plasma and brain. In big white