File:Inner cell mass cartoon.jpg

From Embryology
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The Three Germ Layers of Embryonic Development

During the third week of human embryonic development, the following layers form and will eventually differentiate into and form specific adult tissues (some examples are shown in the cartoon).

  1. Ectoderm
  2. Mesoderm
  3. Endoderm


These same three layers will form the same adult tissues in all mammalian, and more widely vertebrate, embryos.

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Yi efo/eka'e gwa ebo wo le nyangagi wuncin ye kamina wunga tinya nan

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