Immune Cell-Specific and Isoform-Selective Regulation of CD44 in Pancreatic Ductal Adenocarcinoma Links Lymph Node Variant Loss and Exosomal CD44 to Clinical Outcome in Pancreatic Ductal Adenocarcinoma. - Karabiber A; Zhou Y; Mittelstädt A; Hansen FJ; Litau M; Kuchenreuther I; Mazurie J; Clausen FN; Klöckner S; Czubayko F; Weisel N; Klösch B; et al. (Cells, 2026)