An Innovative Diagnostic Strategy for Malignant Pleural Effusion Using Discontinuous Gradient Centrifugation - Jin-xin Zhu; Lei Yuan; Yong-tao Zhan; Ying-jie Li; Hao-ming Xia; Ming Jiang; Xiang Ao; Jie Zhou; Qian Wang; Dong-hui Zhang; Zhi-jie Zhang; Hong-sheng Li; et al. (Archives of Pathology & Laboratory Medicine, 2026)