Embryonic Organogenesis and Body Formation in Amphibian Development

  • M. Asashima
  • A. Sogame
  • T. Ariizumi
  • T. Igarashi


The fertilized egg is a single cell that forms an individual organism according to a built-in developmental program. During development, an organizer is produced in part of the gastrula. The organizer is the “center of the form” and triggers a progression of inductive signals to control the formation of various organs in predetermined places and the development of an overall morphology specific to each species. Over time, various phenomena follow, such as changes in the number and type of cells (cellular differentiation), morphogenetic movements, interactions between tissues, and embryonic induction. These processes advance the developmental program towards the goal of forming an integrated, individual organism. Life scientists today attempt to understand this ontogeny at the level of molecules (from a physical and chemical viewpoint).


Pronephric Duct Dorsal Mesoderm Sandwich Culture Ventral Mesoderm Amphibian Development 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • M. Asashima
    • 1
    • 2
  • A. Sogame
    • 1
  • T. Ariizumi
    • 3
  • T. Igarashi
    • 1
  1. 1.Department of Life Sciences (Biology), Graduate School of Arts and SciencesThe University of TokyoMeguro-ku, TokyoJapan
  2. 2.SORST, Japan Science and Technology Corporation (JST)The University of TokyoTokyoJapan
  3. 3.Department of Experimental Nursing, Faculty of NursingFukuoka Prefectural UniversityTagawa-shi, FukuokaJapan

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