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测定了肺癌患者２８例、正常人３７例血清丙二醛（ＭＤＡ）的含量。结果：肺癌组高于正常对照组（Ｐ＜０．０５）；同时测定肺癌组２８例、正常对照组４９例血清Ｔ－ＳＯＤ（血清中ＳＯＤ总量）活性，肺癌组明显低于正常对照组（Ｐ＜０．０１）。另外，还测定２１例老年人血清Ｔ－ＳＯＤ活性，其活性低于正常对照组（Ｐ＜０．０５），但高于肿癌组（Ｐ＜０．０５）。
The serum malondialdehyde (MDA) content was measured in 28 patients with lung cancer and 37 normal controls. Results: The lung cancer group was higher than the normal control group (P<0.05). Simultaneous determination of serum T-SOD (total SOD) activity was found in 28 lung cancer patients and 49 normal control patients. The lung cancer group was significantly lower than the normal control group. (P<0.01). In addition, serum T-SOD activity was also measured in 21 elderly patients, which was lower than that in the normal control group (P<0.05), but higher than that in the tumor group (P<0.05).