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R&D Systems™ Recombinant Human IL-4 Protein
Extensive quality control produces industry leading bioactivity and lot-to-lot consistency that instills confidence in results and ensures reproducibility. Applications: Bioactivity
Brand: R&D Systems™ 204-IL-050
710.14 EUR valid until 2024-12-16
Use promo code "21630" to get your promotional price.
This item is not returnable.
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Description
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED50 for this effect is 0.05-0.2 ng/mL.Specifications
| Lyophilized from a 0.2μm filtered solution in PBS with BSA as a carrier protein. | |
| 15 kDa | |
| 50 μg | |
| 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. | |
| B cell growth factor 1, BCDF, B-cell stimulatory factor 1, BCGF1, BCGF-1, binetrakin, BSF1, BSF-1, IL4, IL-4B_cell stimulatory factor 1, IL4E12, interleukin 4, interleukin-4, Lymphocyte stimulatory factor 1, MGC79402, Pitrakinra | |
| Recombinant |
| 3565 | |
| IL-4 | |
| E. coli-derived human IL-4 protein His25-Ser153,with an N-terminal Met | |
| <0.1 EU per 1μg of the protein by the LAL method. | |
| Unconjugated | |
| 97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |