Infrequent point mutations in codons 12 and 61 of ras oncogenes in human hepatocellular carcinomas.

Abstract excerpt

DNA from human hepatocellular carcinomas (HCC) were analysed for the presence of mutations in codons 12 and 61 of the K-ras, H-ras and N-ras genes. The relevant ras sequences were amplified in vitro using the polymerase chain reaction and point mutations detected by selective hybridisation using mutation-specific synthetic oligonucleotides. In one of the 19 HCCs a mutation in codon 61 of the K-ras gene was...

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