Conclusion: The mental retardation is correlative with the chromosome aberration and the fragile site expression rate.

结论: 提示精神发育迟滞与染色体的畸变率和脆性部位的表达率有一定的相关性.

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Objective : To explore the correlativity between mental retardation, chromosome aberration rate and fragile site expression rate.

摘要:目的: 探讨精神发育迟滞者与染色体畸变率和脆性部位表达率的相关性.

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