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Dictionary

gas•tru•la•tion

Pronunciation: (gas"troo-lā'shun), [key]
—n. Embryol.
1. the formation of a gastrula.
2. any process, as invagination, by which a blastula or other form of embryo is converted into a gastrula.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

gastrulate

gas tube

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