rhIL-1b Lyophilized. Lyophilized from sterile-filtered PBS, 50 µg BSA/µg IL-1b. Recombinant, human interleukin-1b expressed in E. coli. Major form of interleukin-1 secreted by monocytes and macrophages. Induces nitric oxide synthase in pancreatic and smooth muscle cells and suppresses apoptosis in rat ovarian follicles. Involved in inflammatory and immune responses and promotes wound healing. Biological activity: ED50 = <12 pg/ml as measured in a cell proliferation assay using the murine T-cell line, D10.G4.1 (Symons, J.A. et al. 1987). Purity: ≥97% by SDS-PAGE. Contaminants: Endotoxin: ≤1.0 EU/µg IL-1b. RTECS NM9740000, CAS 97599-21-8. Merck Index: 14, 4993 Ref.: Chun, S.Y., et al. 1995. Endocrinology 136, 3120. Kunz, D., et al. 1994. Biochem. J. 304, 337. Eizirik, D.L., et al. 1993. FEBS Lett. 317, 62. Dinarello, C>A> 1991. Blood 77, 1627. Casagli, M.C., et al. 1989. Biochem. Biophys. Res. Commun. 162, 357. Symons, J.A., et al. 1987. In Lymphokines and interferons, A Practical Approach (Clemens, M.J., et al. eds.) IRL Press, Oxford p. 272. |