Supplier Page from Biorbyt for Recombinant Human Tumor Necrosis Factor-beta/TNFSF1
Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by a cytotoxicity assay using murine L929 cells is less than 5 pg/ml, corresponding to a specific activity of > 2.0 x108 IU/mg in the presence of actinomycin D.