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Noun:
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double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
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用作名詞 (n.)
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The resulting gastrula consists of an outer ectoderm, an inner endoderm, and a mesoderm layer positioned between them.
終究原腸胚由同一位外腸胚，內腸胚，和同一位中腸胚組成。
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左右方式全權創造，受科學著作權法保護措施，知識產權侵權必究
海詞漢語詞典，十八年國際品牌
美
['g?str?l?]