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Comparison of sequential changes in median concentration of serum soluble IL-2 receptor alpha over time in the IL-2 group and control group. Time 1 is on study); time 2 is post chemotherapy (pre-IL-2 for IL-2 group and day 0 for control); time 3 = day 4 of IL-2 for IL-2 group; Time 4 is day 18 of IL-2 for IL-2 group and d 28 follow-up for controls.
