Transcriptional regulation of tissue separation during gastrulation of Xenopus laevis [Elektronische Ressource] / presented by Isabelle Köster

Transcriptional regulation of tissue separation during gastrulation of Xenopus laevis Dissertation submitted to the Combined Faculties of the Natural Sciences and for Mathematics of the Ruperto-Carola University of Heidelberg, Germany for the degree of Doctor of Natural Sciences presented by Dipl.-Biol. Isabelle Köster Dissertation submitted to the Combined Faculties of the Natural Sciences and for Mathematics of the Ruperto-Carola University of Heidelberg, Germany for the degree of Doctor of Natural Sciences presented by Dipl.-Biol. Isabelle Köster born in Pforzheim, Germany Date of oral examination: 12 November 2010 Transcriptional regulation of tissue separation during gastrulation of Xenopus laevis Referees: Prof. Dr. Herbert Steinbeißer Prof. Dr. Thomas Holstein Table of contents Table of contents 1 SUMMARY ............................................................................................................................................... 1 ZUSAMMENFASSUNG .............................................................................................................................. 2 2 INTRODUCTION ....................................... 3 2.1 GASTRULATION ESTABLISHES THE THREE GERM LAYERS ................................................... 3 2.1.1 Convergent extension movements elongate the axis ..... 4 2.1.