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中文摘要：
一氧化氮（NO）是一种细胞信使，它具有重要的生理调节功能，并参与一些病理学过程^[1]。由于NO的生理功能强烈地依赖于其在生物体内的时间和空间分布，因此，对生物体系中的NO进行高时空分辨实时动态监测，对理解NO各项生理功能所具有的极其重要的作用。目前检测NO的方法有紫外一可见分光光度法、化学发光法、荧光光谱法、
英文摘要：
A novel nitrogen oxide （NO） sensor fabricated by modifying the only planar surface of a carbon fiber microdisk electrode（CFMDE） with single-walled carbon nanotubes（SWNTs） and Nation membrane was reported for the first time. The modification of SWNTs dramatically improves the sensitivity of CFMDEs and the detection limit of NO was 4. 3 nmol/L. The sensor was successfully applied to the measurement of NO released from single isolated human umbilical vein endothelial cells.
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