		Technical Data
S7975-50B	Stromal Cell Derived Factor 1 alpha, Recombinant, Human (SDF1a)	10ug

Growth Factors, Cytokines

Storage: -20°CShipping: Blue Ice

Recombinant protein corresponding to 68aa from human Stromal Cell Derived Factor 1 alpha expressed in E. coli.

Biological Activity:
ED50 Range= 5-15ng/ml determined by concentration dependent chemotaxis with human peripheral mononuclear cells culture with IL-2.

Specific Activity:
2.0x10e5-6.7x10e4 units/mg

Storage and Stability:
Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Molecular Weight:
~8kD

Source: E. coli
Purity: ~95% (SDS-PAGE, HPLC). Endotoxin: 0.1ng/ug
Concentration: Not determined
Form: Supplied as a lyophilized powder. Carrier free. Reconstitute with sterile dH2O to 0.1-1mg/ml.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.