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Recombinant Human IL-4 |现货进口
SPECIFICATIONS
Activity Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Ph
The ED50 for this effect is typically 0.050.2 ng/mL.
Endotoxin Level <1.0 EU per 1 μg of the protein by the LAL method.
Purity >97%, by SDSPAGE under reducing conditions and visualized by silver stain.
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein. See Certificate of Analysis for det
PREPARATION AND STORAGE
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 to -70 °C under sterile conditions after reconstitution. |