The three primary germinal layers (ectoderm; endoderm; and mesoderm) developed during gastrulation that provide tissues and body plan of a mature organism. They derive from two early layers, hypoblast and epiblast.
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caloha:0216 Ectodermcaloha:0273 Endodermcaloha:0623 Mesodermcaloha:2693 Embryonic skinBFO:0000050 part of
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bto:0000556fma:69069mesh:D005855uberon:0005291