Interleukin 4, Recombinant, Human (IL-4, B Cell Stimulatory Factor 1, BSF1, Binetrakin,
HCGF, Hodgkin's Cell Growth Factor, IA Inducing Factor, Lymphocyte Stimulatory Factor 1,
Macrophage Fusion Factor, Mast Cell Growth Factor 2, MCGF2, MFF, MGC79402, Pit
Pricing
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| Interleukin-4 is a pleiotropic cytokine that regulates diverse T and B cell responses including cell proliferation, survival and gene expression. Produced by mast cells, T cells and bone marrow stromal cells, IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 cells, characterized by their cytokine-secretion profile that includes secretion of IL-4, IL-5, IL-6, IL-10, and IL-13, which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergy. | | | Catalog # | I7663-07J | | Biological Activity | Fully biologically active when compared to standard. The ED50 as determined by the dose-dependent stimulation of TF1 cells is 0.2ng/ml, corresponding to a Specific Activity of 5 x 10e6 IU/mg. | | Endotoxin | 1EU/ug as determined by LAL method. | | Storage and Stability | Aliquot to avoid repeated freezing and thawing and freeze at -70°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Aliquots are stable for at least 12 months. | | Molecular Weight | 15 kD | | Source | Escherichia coli | | Purity | ~95% by SDS-PAGE and HPLC analyses. | | Concentration | 1mg/ml | | Form | Supplied as a lyophilized powder in PBS, pH 7.4. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 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. |
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Download Specifications for Interleukin 4, Recombinant, Human (IL-4, B Cell Stimulatory Factor 1, BSF1, Binetrakin, HCGF, Hodgkin's Cell Growth Factor, IA Inducing Factor, Lymphocyte Stimulatory Factor 1, Macrophage Fusion Factor, Mast Cell Growth Factor 2, MCGF2, MFF, MGC79402, Pit |
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