Objective To investigate the changes of radiobiological effects of BEL-7402 cells irradiated by two irradiation protocols(3-Dimensional conformal radiation therapy and acute irradiation), and its changes of surviving fraction and radiobiological parameters; To observe the differences of radiosensitivity between human hepatocarcinoma cells BEL-7402 and hepatic cells QSG-7701, approach the possible theoretical evidence .Methods BEL-7402 cells irradiated [...]