IL-5

IL-5

Interleukin 5 (IL-5) is a cytokine which is predominantly associated with antigen-induced eosinophilia. The activation of T Helper 2 (Th2) cells leads to the production of IL-5. IL-5 consists of two identical polypeptide chains composed of 115 amino acids (molecular weight 45kDa). Several studies correlate higher levels of IL-5 with inflammatory disorders such as angioedema, eosinophilia, multiple sclerosis, persistent asthma, and cow’s milk allergy in newborn infants.