The effect of IMMU-114 on peripheral blood lymphocytes from healthy volunteers. Decreases in CD19⁺ and CD3⁺ cells present in the lymphocyte gate after a 2-day incubation of heparinized whole blood of healthy volunteers with mAbs were measured. Data are shown as percentage of untreated control. Error bars represent SD of 3 replicates. *Significant decrease (P < .05) in positive cell count relative to no mAb control.