AUTHOR=Zeng Xiandong , Pan Yixiao , Xia Qiang , He Kang TITLE=The effects of interleukin-21 in the biology of transplant rejection JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1571828 DOI=10.3389/fimmu.2025.1571828 ISSN=1664-3224