AUTHOR=Ye Jiayuan , Ji Shengqiang , Wu Zhouxiao , Ma Genhua , Chen Jing , Wu Shimin , Xie Yilian TITLE=Age-related immunosenescence and Epstein–Barr virus-positive mucocutaneous ulcer presenting as oral cancer: a case report JOURNAL=Frontiers in Medicine VOLUME=11 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2024.1458606 DOI=10.3389/fmed.2024.1458606 ISSN=2296-858X