Effect of CMC-544, unconjugated CalichDMH, or an admixture unconjugated anti-CD22 mAb G5/44 and CalichDMH on the growth of small but established RL BCL xenografts. CMC-544 dose is shown in CalichDMH equivalents. Unconjugated G5/44 dose is in antibody protein equivalents. *Number of tumor-free mice/number of total mice.