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正常生物体内的自由基产生和清除是处在平衡状态的，另一方面，外界环境中存在着多种形式的自由基，其性质活泼，易与体内多种物质发生化学反应，与内源性自由基一起影响着细胞的生长、分化及死亡过程，在肿瘤的发生发展中起一定作用。本实验结果表明，过氧化氢与细胞生长状态之间存在剂量—反应关系，低浓度的过氧化氢（１５μｍｏｌ／１０ｍｌ培养液）作用可刺激细胞增殖，在５０－１００μｍｏｌ／１０ｍｌ培养液浓度范围内引起细胞凋亡样改变，而当浓度大于１００μｍｏｌ／１０ｍｌ培养液时，则可直接导致细胞坏死。本研究结果为进一步探讨人为施加干预，定向诱导细胞生长状态发生变化提供了有意义的资料，为肿瘤的防治研究提供了一个新的思路
Normal organisms produce and eliminate free radicals in a balanced state, on the other hand, there are many forms of free radicals in the external environment, its nature is lively, easily with a variety of substances in the body chemical reaction, and endogenous Free radicals together affect the cell growth, differentiation and death process, play a role in the occurrence and development of tumors. The experimental results show that there is a dose-response relationship between hydrogen peroxide and cell growth. Low concentrations of hydrogen peroxide (15μmol / 10ml broth) can stimulate cell proliferation in the concentration range of 50-100μmol / 10ml Causing apoptosis-like changes, and when the concentration is greater than 100μmol / 10ml broth, it can directly lead to cell necrosis. The results of this study provide meaningful information for further exploration on the changes of cell growth induced by human intervention and directional induction and provide a new idea for the prevention and treatment of tumors