PDX1 and pancreatic ductal adenocarcinoma: To gain an insight into the Plexin-B3 expression in the pancreatic ductal adenocarcinoma (PDAC) disease progression model, we analyzed pancreatic tumor tissues derived from the KrasG12D;Pdx1-Cre (KC) mouse model at different ages (10, 20, 30, and 50 weeks).