The antiserum generated by immunization of mice with the radioresistant MCF7/C6 cells identified a cluster of immunogenic membrane proteins including CD47 and HER2 present in MCF7/C6 and in the cell membrane of radiation-derived breast cancer stem cells (RD-BCSCs)26 (Supplementary Fig. 1c, d). The gene discussed is ERBB2; the disease is breast carcinoma.