#gastrulation  the process in which a gastrula develops from a blastula by the inward migration of cells
  supertype:  organic_process__organicproces__biological_process  a process occurring in living organisms
  part of:  maturation__growth__growing__development__ontogeny__ontogenesis__ontogenesi  the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children"

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