IL-5, human recombinant

A cytokine which stimulates B cell growth & eosinophil activation
Catalog #: 4140 | abID:

Product Details

Alternate Name BCDFII, TRF, T-cell replacing factor, Eosinophil differentiation factor, B cell differentiation factor I, IL-5,
Gene Symbol IL5
Gene ID 3567
Accession # P05113
Source E. coli
Appearance Lyophilized protein
Physical Form Description Lyophilized with no additives.
Molecular Weight 26.5 kDa
Purity by SDS-PAGE ≥98%
Purity by ≥98%
Endotoxin Level <0.1 ng/μg
Biological Activity The ED₅₀ as determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is <0.15 ng/ml, corresponding to a specific activity of >6 x 10⁶units/mg.
Reconstitution Instructions Reconstitute in H₂O to a concentration of 0.1 mg/ml. The solution can be diluted into other buffered solutions or stored at –20°C for future use. For most in vitro applications, IL-5 exerts its biological activity in the concentration range of 0.1 to 10 n
Handling Centrifuge the vial prior to opening.
Storage Conditions -20°C
Shipping Conditions Gel Pack
USAGE For Research Use Only! Not to be used in humans


IL-5 is a potent T-cell derived factor that stimulates the growth of certain B cells and the differentiation of eosinophils. Human IL-5 is a 26.5 kDa protein containing 232 amino acid residues.

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