AUTHOR=Zhou Xin , Huang Xiaoxiong , Zhou Leliang , Zou Yongbiao TITLE=Recurrent ischemic stroke with patent foramen ovale linked to seronegative antiphospholipid syndrome: a case report and literature review JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1558309 DOI=10.3389/fimmu.2025.1558309 ISSN=1664-3224