Objective to investigate the genetic polymorphism of HLA-DRB1 allele in Chongqing population and to analyze the characteristic of the allele frequency distribution.
目的了解重庆地区人群HLA DRB1基因多态性，分析人群HLA DRB1基因频率分布特征。
Objective To investigate the genetic polymorphism of HLA-B locus in Guangdong Han population and compare the characteristic of the allele frequency distribution with that in other populations.
目的调查广东汉族人群HLA-B位点基因多态性，比较不同人群HLA-B等位基因频率分布特征。
Objective: To screen a new Y-chromosome locus and investigate the distribution of allele frequency in Shanxi han population.
目的：筛选新的Y染色体基因座，调查其在山西汉族人群中的等位基因频率分布。
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