Name Human interleukin 7 (IL-7) Description Recombinant human IL-7 produced in E.coli is a single, non-glycosylated, polypeptide chain containing 154 amino acids, three pairs of disulfide bond and having a predicted molecular mass of approximately 17.5 kDa. Source E. coli Activity Measured in a cell proliferation assay using 2E8 cells; the specific activity shall be not less than 2.4×108IU/mg. Purity ≥ 97% (by SDS-PAGE and HPLC) Endotoxin ≤1 EU per mg of purified protein by LAL test Size 10 µg |