IL-3 Protein, Human is a multilineage hematopoietic cytokine with promising effects on platelet and neutrophil counts and special usefulness in patients with secondary hematopoietic failure. IL-3 Protein, Human plays a role in neural cell proliferation and survival. IL-3 Protein, Human inhibits NF-κB nuclear translocation and activation, and inhibits osteoclast differentiation. IL-3 Protein, Human is the recombinant human-derived IL-2 Protein, expressed by E. coli.