Representative diagram of glycolysis and tricarboxylic acid (TCA) cycle showing metabolite concentrations (mM) in livers of CD2F1 male mice (12 weeks old) intrasplenically injected with C26 tumor cells (250,000 cells/mouse in sterile PBS, mC26) or an equal volume of vehicle (Sham) (n = 4-5). Data are expressed as means ± SD. Two-tailed t tests were used to determine differences between Sham and mC26. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001 versus Sham.