According to the data of 33 pairs of twins with retinoblastoma collected from the literatures during this century, the concordance rate of Rb twins and genetic index of Rb ( 76.56%) were calculated.

  • 文章结合本世纪文献报道作过卵性诊断的Rb双生子共33对,计算出同卵双生患病一致率和Rb的遗传指数(76.56%);

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