protéine de 156 acides aminés correspondant au TNFα mature de longueur totale de souris, 50 µg
42 kDa, biologically active protein purified from bacterial lysates
ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D is < 0.1 ng/ml, corresponding to a specific activity of > 1 x 107 units/mg