Effects of IL-2 on the polyploidy of CFU-MK–derived megakaryocytes in blood CD34⁺ cell cultures as opposed to cultures of blood mononuclear cells highly enriched in hematopoietic progenitors.

The effect of IL-2 on megakaryocyte ploidy cannot be detected in cultures of CD34⁺ cells. Each point represents the mean ± SEM of 4 experiments.