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Pronunciation: ek′tō-dĕrm
Definition: The outer layer of cells in the embryo, after establishment of the three primary germ layers (ectoderm, mesoderm, endoderm), the germ layer in contact with the amnionic cavity.
Synonym(s): ectoblast1
[ecto- + G. derma, skin]
Examples: glitazone, GI cocktail, etc.
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