germ layer

1. (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation (synset 101466160)
   referred to in: embryology - the branch of biology that studies the formation and early development of living organisms
   is a type of: embryonic tissue - tissue in an embryo
   subtypes:

   • ectoblast, ectoderm, exoderm - the outer germ layer that develops into skin and nervous tissue
   • mesoblast, mesoderm - the middle germ layer that develops into muscle and bone and cartilage and blood and connective tissue
   • endoblast, endoderm, entoblast, entoderm, hypoblast - the inner germ layer that develops into the lining of the digestive and respiratory systems

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