five simian virus 40 ( sv40 ) -hepatocyte cell lines were examined for tumorigenicity and the effect of in vitro passage on the expression of four liver-specific genes ( albumin , transferrin , alpha 1-antitrypsin , and phosphoenolpyruvate carboxykinase ) , two oncogenes ( c-ha-ras and c-raf ) , and two genes associated with hepatocarcinogenesis ( alpha-fetoprotein and placental-type glutathione-s-transferase ) .
C0023884
liver
C0002210
alpha-fetoprotein