Three-day biodistribution of 125I-labeled chTNT-3 administered at (A) 1, 2, or 3 days after pretreatment with VP-16 (30 mg/kg) in MAD109 bearing BALB/c mice and (B) of 125I-labeled chTNT-3 administered 1 day after 5-FU (50 mg/kg) in LS174T-bearing nude mice. Three-day biodistribution of 125I-labeled chTNT-3 administered at (A) 1, 2, or 3 days after pretreatment with VP-16 (30 mg/kg) in MAD109 bearing BALB/c mice and (B) of 125I-labeled chTNT-3 administered 1 day after 5-FU (50 mg/kg) in LS174T-bearing nude mice. Error bars, SEM. *, P < 0.05; **, P < 0.01; ***, P < 0.001 as determined using one-way ANOVA followed by Tukey post-hoc test (A) and two-tailed Student t test (B). n = 4 mice for all groups. Julie K. Jang et al. Mol Cancer Ther 2013;12:2827-2836 ©2013 by American Association for Cancer Research