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R&D Systems™ Recombinant Human IL-4 Protein

Product Code. 18705766
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Quantity:
100 μg
20 μg
Unit Size:
100µg
20µg
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Product Code. 18705766

Brand: R&D Systems™ 204IL100

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This item is not returnable. View return policy

Extensive quality control produces industry leading bioactivity and lot-to-lot consistency that instills confidence in results and ensures reproducibility. Applications: Bioactivity

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.
TRUSTED_SUSTAINABILITY

Specifications

Accession Number P05112
For Use With (Application) Bioactivity
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Gene ID (Entrez) 3565
Molecular Weight (g/mol) 15 kDa
Quantity 100 μg
Source <EM>E. coli</EM>-derived human IL-4 protein His25-Ser153, with an N-terminal Met
Storage Requirements Manual defrost freezer; Avoid repeated freeze-thaw cycles; 12 mo. from receipt, -20 to -70°C as supplied; 1 mo, 2 to 8°C under sterile conditions after reconstitution; 3 mo, -20 to -70°C under sterile conditions after reconstitution
Regulatory Status RUO
Endotoxin Concentration <0.10 EU per 1 μg of the protein by the LAL method.
Gene Alias 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
Gene Symbol IL4
Conjugate Unconjugated
Cross Reactivity IL-4
Species Human
Reconstitution Reconstitute at 100-200 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Purity or Quality Grade >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
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