Increased Proportion of Circulating T Follicular Helper Cells and Serum Levels of IL-21 in Antibody-Mediated Rejection of Renal Allograft. IJKD [Internet]. 2025 May 16 [cited 2026 Jun. 27];19(02):118-26. Available from: https://ijkd.org/index.php/ijkd/article/view/8835