AUTHOR=Ao Jianyang , Hu Mingtai , Wang Jinghan , Jiang Xiaoqing TITLE=Advancing biliary tract malignancy treatment: emerging frontiers in cell-based therapies JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1559465 DOI=10.3389/fimmu.2025.1559465 ISSN=1664-3224