Sox17{GFPCre} mouse ESC line A mouse ESC line in which part or all of the targeted gene, SRY-box containing gene 17 (NCBI Gene ID: 20671) is replaced to create Sox17{Cre-GFP} using the Loxed Cassette Acceptor allele Sox17{tm1(LCA)}). Using an RMCE strategy, we inserted a Cre-GFP (Green fluorescent protein) fusion protein into a Sox17[LCA] allele thereby replacing Sox17 coding sequences. The Sox17-CreGFP ESCs may be used to track Sox17-expressing cells and their progeny, or to conditionally inactivate genes in Sox17-expressing cells. Mark the expression of Sox17 with both Cre and GFP. Cre will enable lineage tracing using reporter alleles that are activated by cre recombination. GFP will enable direct visualization of Sox17 gene expression. Person: Mark A. Magnuson, Jill Lindner, Jean-Philippe Cartailler Vanderbilt University Medical Center stem cell derived cell line