Product Description

• Endotoxin-free*
• Animal-derived product free
• More Authentic Antigen
• Expressed as Native Trimer Form

Xeno-free TNF alphaHuXp is expressed in human 293 cells and has been shown by gel filtration to be predominantly a non-covalently linked homotrimer, with a molecular mass of 51 kDa. The E. coli form is not a trimer. The cytokine is produced in a human cell expression system with serum free, chemically defined media.