Methods 82 pairs of female -female twins between 6-12 years old were collected.Twin zygosity diagnosis were made by DNA-fingerprinting.
方法收集6-12岁女
双生子82对，通过DNA指纹图进行卵型诊断。
合Methods 82 pairs of female -female twins between 6-12 years old were collected.Twin zygosity diagnosis were made by DNA-fingerprinting.
方法收集6-12岁女双生子82对，通过DNA指纹图进行卵型诊断。
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