本文对饮酒组28例、对照组22例的外周血淋巴细胞姐妹染色单体互换、核仁形成区和随体联合进行了观察、统计。
The paper makes an observation and statistical study of 28 cases in drinking group and 22 cases in control group with peripheric blood of lymphatic sister chromatid exchanges (SCE).
结论：在儿童和青少年发育期，随年龄增长胼胝体各亚区面积同步增大。
Conclusions: in normal children and adolescent, the callosal area increases with the age, and all the subregions increase simultaneously.
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