Creative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
With over a decade of experience in phage display technology, Creative Biolabs can provide a series of antibody or peptide libraries that are available for licensing or direct screening. These ready-to-use libraries are invaluable resources for isolating target-specific binders for various research, diagnostic or therapeutic applications.
Creative Biolabs has established a broad range of platforms for developing novel antibodies or equivalents. These cutting-edge technologies enable our scientists to meet your demands from different aspects and tailor the most appropriate solution that contributes to the success of your projects.
With deep understanding in antibody-related realms and extensive project experience, Creative Biolabs offers a variety of references to help you learn more about our capacities and achievements, including infographic, flyer, case study, peer-reviewed publications, and all kinds of knowledge that can assist your projects. You are also welcome to contact us directly for more specific solutions.
Get a real taste of Creative Biolabs, one of the most professional custom service providers in the world. We are committed to providing highly customized comprehensive solutions with the best quality to advance your projects.
Recombinant murine IL-4 produced in E.coli is a 13.5kDa globular protein containing 120 amino acid residues.
The ED50 was determined by the dose-dependent proliferation of murine HT-2 cells is 5 x 105IU/mg.
Less than 0.1ng/ug (1 IEU/ug) determined by LAL test.
>95% as determined by SDS-PAGE.
Lyophilized protein is stable for a few weeks at room temperature, but best stored at -20oC. Reconstituted murine IL-4 should be stored in working aliquots at -20oC. Aliquot to avoid repeated freeze-thaw cycles.
It is recommended to reconstitute the lyophilized rmIL-4 in sterile 18MΩ-H2O containing at least 0.1% human serum albumin or bovine serum albumin to prepare a stock solution of no less than 5μg/ml of the cytokine.
Crystal structure of human IL-4(2INT).
IL-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 alergy.