Human IL-4 Recombinant Protein #74319
Product Information
Storage
Once in solution, store at 4°C and use within 1 month, or store at -20ºC to -80ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles if storing reconstituted material at -20ºC to -80ºC.
Product Description
| MW (kDa) | 15.1 |
| Purity | A greater than or equal to 95% purity was determined by SDS-PAGE. |
| Endotoxin | Endotoxin levels are less than or equal to 1 EU / 1 μg hIL-4. |
| Activity | The bioactivity of recombinant hIL-4 was determined in a TF-1 cell proliferation assay. The ED50 of each lot is less than or equal to 0.25 ng/mL. |
Source / Purification
Background
- Yokota, T. et al. (1986) Proc Natl Acad Sci USA 83, 5894-8.
- Grabstein, K. et al. (1986) J Exp Med 163, 1405-14.
- Kopf, M. et al. (1993) Nature 362, 245-8.
- Kotowicz, K. and Callard, R.E. (1993) Eur J Immunol 23, 2250-6.
- Thyphronitis, G. et al. (1989) Proc Natl Acad Sci USA 86, 5580-4.
- Hou, J. et al. (1994) Science 265, 1701-6.
Limited Uses
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