IL-5 is a hematopoietic growth factor that stimulates the proliferation and activation of eosinophils. Produced by mast cells, T cells, and eosinophils, IL-5 plays an important role in inducing cell-mediated immunity against parasitic infections and certain tumors. Elevated levels of IL-5 lead to Eosinophilia, which may result in the induction of asthma and other allergic diseases. Recombinant rat IL-5 is a 26.0 kDa disulfide-linked homodimeric protein containing two 113 amino acid chains.
Greater than 98% by SDS-PAGE gel and HPLC analyses.
生物活性:
The ED50 was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is < 0.5 ng/ml, corresponding to a specific activity of > 2 x 106 units/mg.