FAS and carcinoma: Utilizing a variety of human carcinoma cell lines (12 colon, 7 lung, and 4 prostate), Garnett et al. (2004) investigated whether 10 or 20 Gy of gamma radiation could alter the cell surface expression of a variety of molecules involved in T cell-mediated immune attack, including Fas/CD95, adhesion molecules, MHC class I, and TAAs such as CEA and mucin-1 (MUC-1).