Purity > 90% as determined by SDS-PAGE. MW: 33.4kDa. Full Length of Mature Protein: 26-177aa. N-terminal 6xHis-SUMO-tagged. Homo sapiens (Human). Hematopoietic growth factor capable of stimulating the proliferation of lymphoid progenitors. It is important for proliferation during certain stages of B-cell maturation.