+Germ layers are primary cell layers formed during [Embryo Development](/wiki/embryo_development), differentiating into all tissues and organs of an animal. These fundamental sheets, including the [Ectoderm](/wiki/ectoderm), Mesoderm, and Endoderm, give rise to its entire body plan.
+## See also
+- [Gastrulation](/wiki/gastrulation)
+- [Cell Differentiation](/wiki/cell_differentiation)
+- [Organogenesis](/wiki/organogenesis)
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