IL-4 Recombinant Protein

The ED50 was determined by the dose-dependent stimulation of the proliferation of murine HT-2 cells is =2.0 ng/mL, corresponding to a specific activity of = 5 x 105 units/mg

The lyophilized IL-4 recombinant protein is stable for at least 2 years from date of receipt at -20°C. Reconstituted IL-4 is stable for at least 3 months when stored in working aliquots with a carrier protein at -20°C. As with any protein, exposing IL-4 recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.