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对双生儿进行有关寿命的研究,显示寿命和衰老现象与某些遗传因素有关。本文所叙述的细胞遗传学方法是研究衰老遗传因素的重要生物学方法之一。本文所发现的染色
Life-span studies of twins show that life and aging are linked to certain genetic factors. The cytogenetics described in this article is one of the important biological approaches to studying aging genetic factors. The stains found in this article