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对原因不明的轻度智力低下儿童与微量元素铜锌和过氧化物歧化酶关系的探讨。结果表明，轻度智力低儿童的血清铜锌含量和过氧化物歧化酶活性明显低于正常对照组儿童，两组有非常显著性差异（Ｐ＜０．０１），提示本组智力低下儿与血清铜锌含量和过氧化物歧化酶活性降低有关。
Study on the Relationship between Trace Elements Cu, Zn and SOD in Children with Mild Mental Retarded Diseases of unknown Cause. The results showed that the levels of serum copper and zinc and the activity of superoxide dismutase in children with mild mental retardation were significantly lower than those in normal control children (P <0.01), suggesting that the children with mental retardation Serum copper and zinc content and decreased activity of superoxide dismutase.