For example, several studies measured small molecules in EBC (H2O2, 8-isoprostane, and NO-derived products, etc.) to correlate with oxidative stress or disease in pulmonary system.

• 例如：部分研究针对呼出气体凝结液中的小分子(如：H2O2、8-isoprostane、NO衍生的产物等)与氧化压力或呼吸系统疾病的相关性进行探讨。