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tridermic

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tridermic /tri·der·mic/ (-der´mik) derived from all three germ layers (ectoderm, endoderm, and mesoderm).
tri·der·mic (tr-dûrmk)
adj.
Relating to or derived from the three primary germ layers of the embryo.
tridermic [tri-der´mik]
derived from the ectoderm, entoderm, and mesoderm.
tridermic
derived from the ectoderm, entoderm and mesoderm.
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In this context the (almost) anaerobic metabolism at blastula stage embryo could reflect the existence of multi-cellular organisms in the deep anoxic Earth while the transition to aerobic metabolism at gastrula could be related to the evolution towards tridermic organisms around 2 billion years ago.
Evoecotoxicology: the science concerned with the register in living ... by Herkovits, Jorge / Frontier Perspectives
The remarkable transition to aerobic metabolism in gastrula-stage embryos potentially reflects evolution toward tridermic organisms by 2 billion years ago.
Evoecotoxicology: environmental changes and life features development ... by Herkovits, Jorge / Environmental Health Perspectives
 
 
 
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