It suggests that NO acts as aphysiological messerger in circulation, newotransmission and immune defense ,or a active mediator in some pathophysiological state.

• 研究表明，NO既是血液循环、神经传递及免疫杀伤的生理信使又是许多病理状态下的活性介质。从有毒的气体分子到公认的生命物质；