CEACAM5 and neoplasm: Significant improvements in the antitumor efficacy of the vaccine occurred when MC32A tumor bearing CEA.Tg mice received a single i.p. injection of 1.0 mg/kg mGITRL-FP 2 days prior to the priming vaccine followed on day 16 with the rF-CEA-TRICOM booster vaccination (see Figure 1, Schedule C; Figure 2A and 2B).