| Product Name | TNF-α human, Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), cell culture tested |
| Product Number | SRP3177 |
| Product Brand | SIGMA |
| TEST | SPECIFICATION |
| Appearance | lyophilized powder |
| Color | white to off-white |
| Purity by SDS-Page | >=98% |
| Purity by HPLC | >=98% |
| Endotoxin Level | <= 1 EU/ug |
| Biological Activity | The ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomyocin D is <= 0.05 ng/ml, corresponding to a specific activity of >= 2 x 107 units/mg. |
