miR-139-5p modulates radiotherapy resistance in breast cancer by repressing multiple gene networks of DNA repair and ROS defense. by Pajic, M, Froio, D, Daly, S, Doculara, L, Millar, E, Graham, PH, Drury, A, Steinmann, A, de Bock, CE, Boulghourjian, A, Zaratzian, A, Carroll, S, Toohey, J, O'Toole, SA, Harris, AL, Buffa, FM, Gee, HE, Hollway, GE, Molloy, TJ