There were no chromosomeloss, art defect and change of banding pattern among the groups.
各组大鼠均无染色体丢失、臂缺损，以及染色体带型变化。
2
The karyotype of their chromosomes were normal (46xy or 46xx), no chromosome aberration, chromosomeloss and polyploid.
所有患者染色体核型均正常，未见染色体核型缺失及多倍体，均为46xy或46xx型。
3
In cells division chromosome length is shorten for the ending DNA couldn't be replicated completely, and the loss of telomere DNA will lead to senescence and death.