Three tissue layers can be observed on an embryo 3 mm in length. The ectoderm and the endoderm are limited to the embryo, and the mesoderm is both internal and external and seizes the information from the maternal surroundings.
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Jean Ratte Holoenergetic Center 4060, Sainte-Catherine street West, suite 800 Montreal (Quebec) H3Z 2Z3 514 278-2663 janusholo@gmail.com or jean.ratte@holoener.com
