Characterization of intratumoral tertiary lymphoid structures in pancreatic ductal adenocarcinoma: cellular properties and prognostic significance ================================================================================================================================================== * Xuan Zou * Xuan Lin * He Cheng * Yusheng Chen * Ruijie Wang * Mingjian Ma * Yu Liu * Zhengjie Dai * Yesboli Tasiheng * Yu Yan * Qinqin Hou * Fei Ding * Huan Chen * Xianjun Yu * Xu Wang * Chen Liu