APRIL protein (CD256) is a ligand in the tumor necrosis factor (TNF) family that can induce proliferation, regulate tumor cell growth, and may participate in mononuclear/macrophage-mediated immune process[1]. APRIL protein is produced by myeloid cells and their precursors to accelerate cell maturation and peripheral rupture[2]. APRIL protein has been widely used in the study of lymphatic malignancies. Human APRIL protein is a type II membrane protein with cytoplasmic domain, hydrophobic transmembrane domain and extracellular domain. Animal-Free APRIL/TNFSF13 Protein, Human (His) is produced by E. coli (A105-L250) with C-terminal His-tag.This product is for cell culture use only.