Sterile filtered white lyophilized (freeze-dried) powder. The protein was lyophilized from a sterile (0.2um) filtered solution containing 0.1% Trifluoroacetic Acid (TFA).
保存建议
Lyophilized IL-4 although stable at room temperature for 3 weeks, should be stored desiccated below -18 degree C. Upon reconstitution IL-4 should be stored at 4 degree C between 2-7 days and for future use below -18 degree C. Please prevent freeze-thaw cycles.