furthermore , the combined immunocytochemical and in situ hybridization assays revealed that human hepatocellular carcinoma cells overexpressing ras p21 did not show hepatitis b virus dna/rna , whereas some human hepatocellular carcinoma cells and nontumorous hepatocytes located away from the foci of oncogene-expressing cells gave positive signals .
C0034678
ras
C0086418
human