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TNF-beta, Recombinant, Human (Human TNF-beta, TNF-beta, TNFbeta,TNF beta, h-TNF-beta, rh-TNF-beta, recombinant human TNF-beta, recombinant TNF-beta, TNF)

Cat no: 167979


Supplier: United States Biological
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Tumor Necrosis Factor-b (TNF-b) is a potent lymphoid factor that exerts cytotoxic effects on a wide range of tumor cells and certain other target cells. Human TNF-b is a 18.6kD protein containing 171aa residues. Source: Recombinant corresponding to human TNF-b expressed in E.coli. Molecular Weight: ~24kD Biological Activity: The ED50 as determined by the cytolysis of murine L929 cells in the presence of actinomycin D is ~0.05ng/ml, corresponding to a specific activity of ~2x10e7 units/mg. Endotoxin: ~0.1ng/ug Storage and Stability: Lyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile buffer. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: 167979
Size: 20ug
Form: Supplied as a lyophilized powder. Reconstitute in PBS to 1mg/ml.
Purity: ~98% (HPLC, SDS-PAGE)

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