CD86 ‐Positive Mature Tertiary Lymphoid Structures Are Associated With CD8 + T‐Cell Infiltration and Favorable Clinical Outcomes in Pancreatic Ductal Adenocarcinoma - Takaomi Seki; Kenichiro Araki; Takehiko Yokobori; Hayato Ikota; Norio Kubo; Takamichi Igarashi; Mariko Tsukagoshi; Norihiro Ishii; Yasuo Hosouchi; Hiroshi Saeki; Ken Shirabe (Annals of Gastroenterological Surgery, 2026)