Name Human interleukin 15 (IL-15) Description Recombinant human IL-15 produced in E.coli is a single, non-glycosylated, polypeptide chain containing 114 amino acids, having a predicted molecular mass of approximately 12.7 kDa. Source E. coli. Activity Measured in a cell proliferation assay using CTLL-2; the specific activity shall be not less than 5×108IU/mg Purity ≥ 97% (by SDS-PAGE and HPLC) Endotoxin ≤ 1 EU per mg of purified protein by LAL test Size 10 µg |