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马萨诸塞综合医院和波士顿哈佛医学院的研究人员在3月8日的《科学》上报道,通常能保护躯体免受细菌感染的血细胞.在足够长的时间里所产生的杀死细菌的毒性物质有时会致使正常组织恶变.上述研究人员通过研究认为,不仅环境中的毒性物质会致癌,吞噬细胞为抵抗环境中的致癌物而释放的毒性物质也会致癌.他们证明,人类的吞噬白细胞会释放可使正常鼠结缔组织恶变的毒性自由基(氧代谢物).试验如下:把经过能产生毒性氧代谢物的人类吞噬白细胞处理过的细胞,注入43只鼠作为试验鼠,同时把未经过处理的细胞注入53只鼠作为对照鼠.结果,试
Researchers at the Massachusetts General Hospital and Harvard Medical School in Boston reported in Science March 8 that they usually protect the body from bacterial-infected blood cells. Bacterial toxic substances produced for a long enough period sometimes Will lead to malignant transformation of normal tissues.The researchers believe that not only toxic substances in the environment will cause cancer, toxic substances released by phagocytes to resist the carcinogens in the environment can cause cancer.And they prove that human phagocytic leukocytes can release Toxic free radicals (oxygen metabolites) causing malignant transformation of normal mouse connective tissue were tested as follows: Human leukocyte-treated cells that had been subjected to toxic oxygen metabolites were injected with 43 mice as test mice and untreated 53 mice were injected as control mice