Fate maps of ventral and dorsal pancreatic progenitor cells in early somite stage mouse embryos

► We constructed a fate map for the ventral and dorsal pancreas in early mouse embryos. ► The ventral pancreas (vp) progenitors reside at the AIP lip, anterior to the liver. ► The left or right AIP flankings contribute to the anterior or posterior gut. ► A conversion of left-right to anterior-posterior asymmetry occurs from 5 ss. ► Dorsal pancreatic progenitors reside at the 3-6 somite level at 7-9 ss.