Tissue biodistribution and tumor uptake of chCLL-1, chCLL-1/GM-CSF, and chCLL-1/IL-2 at 72 hours postinjection in ARH-77 myeloma tumor-bearing nude mice. (A) Tumor uptake measured by percent injected dose/gram of ¹²⁵I-labeled MoAb or fusion protein in the indicated tissues. (B) Tumor:organ ratios expressed as mean ± SD.