IL-5 (interleukin 5) is a Th2 (T helper 2) cytokine that is predominantly produced by T lymphocytes, and to a lower extent by mast cells, type 2 innate lymphoid (ILC2) cells, and eosinophils.
Recombinant murine IL-5 is a 26.2kDa disulfide-linked homodimeric protein containing two 113 amino acid chains.

IL-5 (interleukin 5) was initially identified as a stimulant of antibody production by activated B cells. It has recently been shown to be a key factor in eosinophil differentiation and proliferation. It is also implicated in the pathogenesis of asthma, atopy, hypereosinophilic syndromes, and parasitic infections. In distal lung, IL-5 recruits eosinophils and modulates inflammatory or immune cells in the microenvironment, thus, promoting lung metastasis in cancer.

MEIPMSTVVK ETLTQLSAHR ALLTSNETMR LPVPTHKNHQ LCIGEIFQGL DILKNQTVRG GTVEMLFQNL SLIKKYIDRQ KEKCGEERRR TRQFLDYLQE FLGVMSTEWA MEG

Lyophilized from 10 mM Sodium Phosphate, pH 7.5.

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.