近年来 ,愈来愈多的研究资料表明 ,临床医学中诸如肿瘤等疾病的发生 ,虽然发病机理及病理过程不十分清楚 ,但均与活性氧代谢异常有关。活性氧是指机体内由氧形成、含氧而且性质活泼的一些物质的总称 :最主要的有二种含氧的自由基 ,即超氧阴离子 (O2 · -)和羟自由基 (· OH) ; In recent years, more and more research data show that, although the pathogenesis and pathological processes of diseases such as tumors in clinical medicine are not very clear, they are all related to the abnormality of active oxygen metabolism. Active oxygen is the general name for oxygen-containing, oxygen-containing, and lively substances in the body: The two most important oxygen-containing free radicals are the superoxide anion (O2 · -) and the hydroxyl radical (·OH). ;