Name Human interleukin 12 (IL-12) Description Measured in a cell proliferation assay using PBMC after being induced by IL-2; the specific activity shall be not less than 1×107IU/mg. Purity ≥ 97% (by SDS-PAGE and HPLC) Endotoxin ≤ 1 EU per mg of purified protein by LAL test Size 20 µg |