…As a result, two cell layers, an inner and an outer, and epithelial or mesenchymal cells located between them appear. Of these, the outer cell layer is called the ectoderm, the inner layer is called the endoderm, and the group of cells surrounded by the two and not in direct contact with the outside world is called the mesoderm. Although the specific aspects of the process from fertilization to the differentiation of these three germ layers vary, they are common to all multicellular animals. … *Some of the terminology that mentions "endoderm" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その結果,内外二つの細胞層,およびこの両者の間に位置する上皮性または間充織性の細胞が出現する。これらのうち,外に面した細胞層を外胚葉ectoderm,内側に向いた層を内胚葉endoderm,両者に囲まれて直接外界に接することのない細胞群を中胚葉mesodermとよぶ。受精からこの三胚葉の分化までの過程の具体的な様相はさまざまであっても,すべての多細胞動物に共通している。… ※「endoderm」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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