mouse strain Pdx1{(H2B.Apple)Mgn} mouse strain A mouse strain in which part or all of the targeted gene, pancreatic and duodenal homeobox 1 (NCBI Gene ID: 18609) is replaced to create Pdx1{H2B.Apple} using the Loxed Cassette Acceptor allele Pdx1{tm1(LCA)}). This mouse contains a coding sequence for the mApple-H2B fusion protein in order to tag cells expressing Pdx1 with a red fluorescent protein. The generation of a Pdx-1 red fluorescent marker will enable the isolation of pancreatic lineage progenitors by FACS. The presence of the H2B sequences may also be useful in allowing the plane of cell division to be analyzed. Pdx1{(H2B.Apple)Mgn} Person: Mark A. Magnuson, Jill Lindner, Jean-Philippe Cartailler Vanderbilt University Medical Center