Lookup NU author(s): Dr Elizabeth Jones,
Dr David Wilson
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We report the characterization of a gene trap integration that provides an in situ marker for one of the earliest events in liver development. Expression of the reporter gene is observed at the nine-somite stage in the hepatic field of the foregut endoderm. At 10.5 days post-coitus expression is observed exclusively and at high levels in the majority of cells in the developing liver bud. As development proceeds the proportion of expressing cells decreases with expression in adult liver being restricted to a few sporadic cells. This therefore provides the earliest, most specific in situ marker of the hepatic lineage reported to date and will be useful in the further characterization of the inductive events involved in hepatic specification. Molecular characterization of the gene trap insertion suggests that the expression pattern is the result of alternative promoter use in the ankyrin repeat-containing gene, gtar. Copyright © 2001 Elsevier Science Ireland Ltd.
Author(s): Jones EA; Wilson DI; Watt AJ; Ure JM; Peddie D; Forrester LM
Publication type: Article
Publication status: Published
Journal: Mechanisms of Development
ISSN (print): 0925-4773
ISSN (electronic): 1872-6356
Publisher: Elsevier Ireland Ltd
PubMed id: 11165478
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