ED50 < 0.1 ng/mL, measure by a cell proliferation assay using murine balb/c 3T3 cells, corresponding to a Specific Activity of > 1 x 107Units/mg.
Storage Buffer:
Lyophilized from a solution containing 1X PBS, pH 7.4. Reconstitute the lyophilized powder in 1X PBS to 100 ug/mL.
Storage Instruction:
Lyophilized protein at room temperature for 3 weeks, should be stored at -20°C. Protein aliquots at 4°C for 2-7 days and should be stored at -20°C to -80°C. Avoid repeated freeze/thaw cycles.