mouse strain Ngn3{T2A.nCreGgu} mouse strain A mouse strain in which part or all of the targeted gene, Neurogenin 3 (NCBI Gene ID: 11925) is replaced to create Ngn3{T2A.nCre} using the Loxed Cassette Acceptor allele ). In this mouse line, one of the two bi-partite Cre molecules, nCre, was knocked in upstream of Ngn3 coding sequence by RMCE in Ngn3{HA.LCA} ES cell line. nCre sequence is expressed from policistronic mRNA linked by 2a peptide to Ngn3 coding sequence allowing for simultanious expression of both proteins from the Ngn3 promoter. This mouse line, in combination with Nkx2.2{cCre} mouse line, allows for the labeling of pancreatic epithelium cells that co-express high levels of Ngn3 and Nkx2.2 during mouse embryonic development. Ngn3{T2A.nCreGgu} Person: Mark A. Magnuson, Jill Lindner, Jean-Philippe Cartailler Vanderbilt University Medical Center