Objective To investigate the effects of STAT3 antisense oligodeoxy-nucleotid(ASODN)on the proliferation and apoptosis of HepG2 cells.Methods HepG2 cells were cultured in vitro.STAT3 ASODN was artificially produced and then transfected into HepG2 cells by lipofectin.The morphological changes were observed under an inverted microscope,cell proliferation was measured by MTT,the apoptotic index was examined by Tunel,levels of STAT3 mRNA expression were detected by RT-PCR.Results STAT3 ASODN at different concent...