A, one-step viral growth curves: RT treatment increased the virus yield in MV-CEA–treated U87 cells by up to 2 log as compared with MV-CEA infection only. A, one-step viral growth curves: RT treatment increased the virus yield in MV-CEA–treated U87 cells by up to 2 log as compared with MV-CEA infection only. B, increased CEA levels in combination-treated cells mirrors the viral titer data. C, Western blot showed a significant increase in viral H and N protein expression in MV/RT–treated U87 cells versus MV-treated cells. Chunsheng Liu et al. Clin Cancer Res 2007;13:7155-7165 ©2007 by American Association for Cancer Research