Ebrahimpur M, Hajilooi M, Solgi G, Rastegari-Pouyani M. Serum Levels of IL-21 and IL-27 Do not Reflect differential Avidity of Anti-SARS-CoV-2 IgG Antibodies in Symptomatic and Asymptomatic COVID-19 Patients. Iran J Allergy Asthma Immunol. 2025;24(3):396-402.