Used in the treatment of inflammatory diseases, particularly asthma and atopic dermatitis, by targeting and neutralizing interleukin-13 (IL-13), a key cytokine involved in allergic inflammation. It helps reduce airway hyperresponsiveness, mucus production, and tissue remodeling in asthma, and improves skin lesions and itching in eczema. Also employed as a reference standard in bioassays and drug development for evaluating the efficacy of other anti-IL-13 therapeutics.