Bio-activity
Established by the dose-dependent stimulation of Balb/c 3T3 cells proliferation. The expected ED50 for this effect is 8-10 ng/ml corresponding to a specific activity of 100,000-125,000IU/mg.
Storage
Lyophilized PDGF-AA although stable at room temperature for 3 weeks, should be stored desiccated below -18 centigrade. Upon reconstitution PDGF-AA should be stored at 4 centigrade between 2-7 days and for future use below -18 centigrade.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.