Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
Less than 1.0 EU/ug as determined by LAL method.
Measured in cell activity assay using U937 cells. The EC50 for this effect is 190.2-298.6 ng/ml.
"Sequence investigation of the major gastrointestinal tumor-associated antigen gene family, GA733."
Linnenbach A.J., Wojcierowski J., Wu S., Pyrc J.J., Ross A.H., Dietzschold B., Speicher D., Koprowski H.
Proc. Natl. Acad. Sci. U.S.A. 86:27-31(1989)
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.