内毒素:Less than 1.0 EU/μg as determined by LAL method.
生物活性:Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human IL-20Rα and human IL-20Rβ co-transfected murine BaF3 pro-B cells is less than 0.5 ng/ml, corresponding to a specific activity of >2.0x106 IU/mg.