One in five cell-lines mutated a particular region of chromosome 20.
1/5的培养细胞在20号染色体上的特定区域发生突变。
They found two previously unknown genetic variants on chromosome 20 that substantially increased the risk of male pattern baldness.
他们在20号染色体上发现两个新的遗传变异，它们大大增加了男性型秃发的危险。
If you have both the risk variants we discovered on chromosome 20 and the unrelated known variant on the X chromosome, your risk of becoming bald increases sevenfold.
如果你的染色体上有两个基因变异：我们发现的位于20号染色体上的变异和人们以前就知道的X染色体上的变异，您患秃发的风险将增加七倍。
So far, more than 20 babies have been born using the screening programme, which checks for chromosome abnormalities.
到目前为止，通过筛选方法出生的婴儿已有超过20个，这种方法可以检验出染色体异常。
Chromosomal abnormalities are thought to account for 10 to 20 percent of cases and duplication of chromosome 15q11-13 is the only recurrent aberration so far linked to the disease.
有人认为，染色体异常可能会占孤独症病例的百分之十到二十，而15q11-13区段的染色体重复，是目前唯一所知的能和孤独症相关联的异常。
Methods 1. Patient samples: Bone marrow or blood cells were obtained from 107 patients with leukemia, 20 patients with MDS and 20 controls for chromosome and frozen cell purpose.
方法：1。标本获取及分组采集107例白血病、20例MDS病人及20例正常对照组骨髓进行染色体培养、制备及细胞冻存。
A total of 101 EST-SSR loci amplified from 88 primer sets were distributed onto the 20 chromosomes of the reference maps (no marker on chromosome 4b).
其中有88对EST - SSR引物共扩增到101个位点并定位到20条染色体上(染色体4B上没有位点定位)。
Results 43/69 astrocytomas were found to be abnormal chromosome clones, including 12/25 astrocytomas, 15/21 anaplastic astrocytoma, and 16/20 glioblastoma respectively.
结果12／25 的星形细胞瘤， 15／21间变型星形细胞瘤和16／20 的多形胶质母细胞瘤存在染色体数量上的变异。
Results 43/69 astrocytomas were found to be abnormal chromosome clones, including 12/25 astrocytomas, 15/21 anaplastic astrocytoma, and 16/20 glioblastoma respectively.
结果12／25 的星形细胞瘤， 15／21间变型星形细胞瘤和16／20 的多形胶质母细胞瘤存在染色体数量上的变异。
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