The cisplatin-irradiation combination suggests that apoptosis is not a major determinant of clonogenic death. Posted on 17 dicembre 2014 The cisplatin-irradiation combination suggests that apoptosis is not a major determinant of clonogenic death. Lo Nigro C, Arnolfo E, Taricco E, Fruttero A, Russi EG, Lucio F, Ribero S, Comino A, Merlano M, Ungari S. Anticancer Drugs. 2007 Jul;18(6):659-67.