Interleukin 11 (IL-11) is a pleotropic cytokine closely related to IL-6 in function, but is overall one of the lesser characterized interleukins. In hematopoietic cell populations, IL-11 is thought to induce megakaryocyte differentiation. In nonhematopoietic populations, IL-11 is thought to be able to stimulate hepatic acute-phase Proteins. IL-11 can stimulate murine cells. Recombinant IL-11 is a non-glycosylated Protein, containing 179 amino acids, with a molecular weight of 19.3 kDa.