Technical Data
Tumor Necrosis Factor beta, Recombinant, Human (TNFb)
Molecular Biology Storage: -20CShipping: Blue Ice
Tumor necrosis factor beta (TNFbeta) is a lymphoid factor which exerts cytotoxic effects on a wide range of tumor cells.

Recombinant corresponding to human TNF beta, expressed in E. coli.

Molecular Weight:
~18.6kD (172aa sequence)


Endotoxin: 0.1ng/ug of TNF-beta ( 1EU/ug)

Suitable for use in Cytotoxicity Assays. Other applications not tested.

Recommended Dilution:
Cytotoxic Assays: 0.05-10ng/ml
Optimal dilutions to be determined by the researcher.

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with 20ul sterile dH2O. Aliquot and store at -20C. Reconstituted product is stable for 6 months at -20C. 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.

Molecular Weight:
Source: E. coli
Purity: Purified: ~98% (SDS PAGE, HPLC).
Form: Supplied as a lyophilized powder from PBS. No preservative added. Reconstitute with 20ul sterile dH2O.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.