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IL-13 is an immunoregulatory cytokine produced primarily by activated Th2 cells, and also by mast cells and NK cells.? Targeted deletion of IL-13 in mice resulted in impaired Th2 cell development and indicated an important role for IL-13 in the expulsion of gastrointestinal parasites.? IL-13 exerts anti-inflammatory effects on monocytes and macrophages and it inhibits the expression of inflammatory cytokines such as IL-1b, TNF-a, IL-6 and IL-8.? IL-13 has also been shown to enhance B cell proliferation and to induce isotype switching, resulting in increased production of IgE.? Blocking of IL-13 activity inhibits the pathophysiology of asthma.? Human and murine IL-13 are cross-species reactive.? Recombinant Rat IL-13 a 12.3 kDa protein consisting of 113 amino acid residues.

Source: E.coli

Synonyms: NC300 (Human), P600 (Murine)

AA Sequence: TPGPVRRSTS PPVALRELIE ELSNITQDQK TSLCNSSIVW SVDLTAGGFC AALESLTNIS SCNAIHRTQR ILNGLCNQKA SDVASSPPDT KIEVAQFISK LLNYSKQLFR YGH

Purity: ≥ 98% by SDS-PAGE gel and HPLC analyses.

Biological Activity: The ED₅₀ was determined by the dose-dependent proliferation of TF-1 cells is < 5.0 ng/ml, corresponding to a specific activity of > 2 x 10⁵ units/mg.