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用限制性内切酶ＴａｑＩ和Ｃ４基因５￣＇末端探针ｐＡＴ－Ａ检测５８份湖北地区健康献血员基因组ＤＮＡ的Ｃ４基因限制性片段长度多态性（ＲＦＬＰ），观察到７．０ｋｂ、６．０ｋｂ和５．４ｋｂ三种Ｃ４基因片段，它们共组成三种常见的Ｃ４基因ＲＦＬＰ表型，即Ａ：７．０５－４ｋｂ（频率为２４．１４％））；Ｂ：７．０－６．０ｋｂ（频率为２０．６９％）和Ｃ：７．０－６．０－５．４ｋｂ（频率为５５．１７％，在所检测的样本中未观察到６．４ｋｂ的Ｃ４基因片段。
The C4 gene restriction fragment length polymorphism (RFLP) of 58 healthy volunteers in Hubei province was detected by restriction endonuclease TaqI and 5 ’end probe pAT-A of C4 gene. .0kb and 5.4kb three C4 gene fragments, which together make up the three common RFLP phenotypes C4 gene, namely A: 7.05-4kb (frequency of 24.14%)); B: 7.0-6 .0kb (frequency 20.69%) and C: 7.0-6.0-5.4kb (frequency 55.17%). No 6.4kb C4 gene fragment was observed in the samples tested.