Comparative characterization of stroma cells and ductal epithelium in chronic pancreatitis and pancreatic ductal adenocarcinoma. oleh Ole Helm, Ruben Mennrich, Domantas Petrick, Lisa Goebel, Sandra Freitag-Wolf, Christian Röder, Holger Kalthoff, Christoph Röcken, Bence Sipos, Dieter Kabelitz, Heiner Schäfer, Hans-Heinrich Oberg, Daniela Wesch, Susanne Sebens