ectoblast
外胚葉
ec·to·blast /ˈɛktəˌblæst/ 名詞
外質生成細胞,外胚層,外膜,外胚
Ec·to·blast n. Biol. (a) The outer layer of the blastoderm; the epiblast; the ectoderm. (b) The outer envelope of a cell; the cell wall.
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ectoblast
n : the outer germ layer that develops into skin and nervous
tissue [syn: ectoderm, exoderm]