Tumor uptake and tumor-to-blood ratio of 131
I-labeled chAb 14C5 and 131
I-labeled ch MabThera. Tumor uptake (%ID/g) (a) and tumor-to-blood ratio (b) of 131I-labeled chAb 14C5 in A549 lung tumor-bearing mice and in Colo16-bearing mice and 131I-labeled ch MabThera in A549 lung tumor-bearing mice. Values are corrected for decay of the radionuclide. Data are expressed as mean ± SD (n = 3 to 5). The asterisk indicates p < 0.05, non-parametric Mann–Whitney U test.