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内皮素(endothelin,ET)是由21个氨基酸组成的血管活性肽,分布于许多组织器官其中以肺含量最高,是迄今所知体内缩血管作用最强的物质。一氧化氮(NO)是由机体合成并可作用于多种组织器官的活性氮
Endothelin (ET) is a vasoactive peptide composed of 21 amino acids. It distributes in many tissues and organs and has the highest content of lung. It is the strongest vasoconstrictor substance known to date. Nitric oxide (NO) is an active nitrogen that is synthesized by the body and acts on many tissues and organs