AUTHOR=Shi Mei , Long Fuquan , Zou Danyang , Gu Xin , Ni Liyan , Cheng Yuanyuan , Qi Tengfei , Zhao Wei , Zhu Lin , Guan Zhifang , Zhou Pingyu TITLE=Evaluation of cerebrospinal fluid treponema pallidum particle agglutination assay titer for neurosyphilis diagnosis among HIV-negative syphilis patients JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1572137 DOI=10.3389/fimmu.2025.1572137 ISSN=1664-3224