Determined by its ability to inhibit the proliferation of murine WEHI-279 cells. The expected ED50 is <=0.2 ng/ml, corresponding to a specific activity of >=5 x 10^6 units/mg.
Endotoxin
Less than 0.01 ng/µg of protein (Less than 0.1 EU/µg).
Presentation
Lyophilized from 10mM sodium phosphate, pH 7.0, 25mM NaCl
Reconstitution
Reconstitute in sterile water to 1 mg/ml.
Storage
If lyophilized, can be stored for 1 month at room temperature, 6 months at 4°C, or through the expiration date at -20°C to -80°C. Once reconstituted per the supplied instructions, can be stored for 3 months at -20°C to -80°C, or for 1 week at 2°C to 8°C. Avoid freeze-thaw cycles.