AIM: To study the effect of GAPSGF on N-ras and C-myc oncogene expression in HepA tissue. This will help to complete the mechanism of antitumor effect of GAPSGF. METHODS: 1 the ratio of antitumor: weigh the intact tumour of each group and calculate the ratio.2 Observe the effect of GAPSGF on N-ras and C-myc oncogene transcription by the method of ISH.3 Observe the effect of GAPSGF on N-ras and C-myc oncogene protein expression by the method of immunohistochemical ...