Survival and tumor burden of mice bearing peritoneally disseminated gastric cancer. Survival and tumor burden of mice bearing peritoneally disseminated gastric cancer. MKN-28 cells were injected i.p. into severe combined immunodeficiency mice, and tumor was allowed to develop for 10 days. Mice were treated i.p. with CRAds or replication-deficient control virus and followed for survival. A, all oncolytic viruses significantly improved the survival of mice over mock (P < 0.0005) and Ad5luc1 (P < 0.05) injected mice. B, 50 days after injecting the cells, serum samples were collected from the tail vein to measure tumor marker βhCG. Lotta Kangasniemi et al. Clin Cancer Res 2006;12:3137-3144 ©2006 by American Association for Cancer Research