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You are here:Home » Molecular Biology » Growth Factors-Interleukin » Interleukin 3 beta, Recombinant, Rat (IL-3 beta, IL-3b)

Interleukin 3 beta, Recombinant, Rat (IL-3 beta, IL-3b)


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Interleukin-3 (IL-3 beta) is a pleiotropic cytokine and member of the IL-3 family, predominantly expressed by activated T cells, which stimulates the differentiation and proliferation of hematopoietic stem cells into myeloid progenitor cells, and the proliferation of mast cells, macrophages, granulocytes and erythrocytes.
Catalog #I7663-39D
SourcePurified recombinant rat IL-3 beta expressed in E.coli.
Activity The ED50 was determined by the dose-dependent stimulation of the proliferation of thymidine uptake by murine MC-9 cells is 10 ng/ml, corresponding to a specific activity of 1.0 x 10e5 units/mg.
ApplicationsSuitable for use in Functional Assays. Other applications not tested.
Recommended DilutionOptimal dilutions to be determined by the researcher.
Storage and StabilityLyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O. Aliquot and store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight16.3kD
Purity~98% by SDS PAGE and HPLC analysis. Endotoxin: 1EU/ug.
FormSupplied as a lyophilized powder. Reconstitute with 200ul sterile dH2O.
Important NoteThis 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.
Alternate namesInterleukin-3, IL-3, IL3, Hematopoietic Growth Factor, Mast Cell Growth Factor, MCGF, Multipotential Colony-stimulating Factor, P-cell-stimulating Factor

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