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Gastrulation is an early stage during [[metazoan]] development where the embryo which was previously a hollow ball of cells begins to infold.
'''Gastrulation''' is an early stage during [[metazoan]] development where the embryo which was previously a hollow ball of cells begins to infold.
Gastrulations marks a vital stage in development and is much studied by [[biology|biologists]].
Gastrulations marks a vital stage in development and is much studied by [[biology|biologists]].
[[category:biology]]
[[category:biology]]