Regression of the irradiated and abscopal tumours was similar in mice bearing TSA shIfnar1 and control TSA shNS cells at the irradiated site, indicating that responsiveness of cancer cells to IFNОІ was not required for 8GyX3 anti- CTLA4- induced tumour inhibition Fig. is doxycycline used for J Med Food 2009; 12 6 1302- 1309.