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在探查中国汉族人癌基因N-ras对Eco RI的RFLPs时,意外地发现其左段有4.0 kb,7.8 kb,12.0 kb等3个未见报告的特异等位片段,其右段除已见报告的7.0 kb片段外,还获得1个未见报告的12.8 kb的等位片段。未查出这些RFLPs与肝癌易感性的相关性。
In exploring the RFLPs of the Chinese RI-EcoRI at the oncogene N-ras of Chinese people, we found unexpectedly three unreported alleles at 4.0 kb, 7.8 kb and 12.0 kb in the left segment, In addition to the 7.0 kb fragment reported, one unreported 12.8 kb allele was obtained. The association of these RFLPs with the susceptibility of liver cancer was not detected.