Name Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) Description Measured in a cell proliferation assay using the factor-dependent cell line, TF-1, the specific activity shall be not less than 1×107 IU/mg. Purity ≥ 97% (by SDS-PAGE and HPLC) Endotoxin ≤ 1 EU per mg of purified protein by LAL test Size 10 µg |