Biological Activity:Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10S cells is less than 1.0 pg/ml, corresponding to a specific activity of > 1.0 × 109 IU/mg.
Purity:> 97 % by SDS-PAGE and HPLC analyses.
Formulation:Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.