GNAS and pancreatic intraductal papillary-mucinous neoplasm: To examine whether Aqp5+/Agr2+/DBA− ductal cells were associated with IPMN development in an established mouse model for IPMN, we stained Aqp5, Agr2 and DBA in sections obtained from KGC mice, which combines KRasG12D and GNAS mutation (Patra et al., 2018).