Endotoxin content was assayed using a LAL gel clot method. Endotoxin level was found to be less than 0.1 ng/ug (1EU/ug).
Activity:
The ED50 determined by the dose-dependent proliferation of murine 7TD1 cells, was found to be < 0.01 ng/mL cells was found to be in the range of 1 x 108 U/mg.
Storage Buffer:
Lyophilized from PBS
Storage Instruction:
Store at -20°C on dry atmosphere for 2 years. After reconstitution with deionized water, store at 4°C for 1 month or store at -20°C for 6 months. Aliquot to avoid repeated freezing and thawing.