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FIGURE 6. Relative growth of LS174T colon cancer xenografts after RIT treatment (n = 9). Tumor size changes are expressed relative to tumor volume 10 d after tumor implantation on day of 131I-B72.3 treatment (day 0). (A) AP (0.1 mg) without RIT. Solid lines represent kinetics of tumor growth for each mouse treated with AP; dotted line is mean tumor growth curve in control mice that received no treatment. (B) RIT with 9.25 MBq 131I-B72.3 alone. (C) Combination RIT with 9.25 MBq 131I-B72.3 and 0.1 mg AP.