Interleukin-1β, Mouse, Recombinant, E. coli Form Lyophilized Formulation Lyophilized from sterile-filtered PBS, 50 µg BSA/µg IL-1β. Molar mass 17000 Biological activity ED50= 5-10 pg/ml as measured in a cell proliferation assay Purity ≥97% by SDS-PAGE Contaminants Endotoxin: ≤1.0 EU/µg IL-1β Solubility Sterile PBS containing ≥0.1% HSA or BSA RTECS NM9740000 Merck USA index 14, 4993 商店和运输信息 Storage ≤ -70°C Ship Ambient Temperature Only Standard Handling