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the central cavity that is the provisional gut in the gastrula; the primordial digestive cavity of the embryo.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
protogaster(prō″tō-găs′tĕr) [″ + gaster, belly]
The archenteron or gastrocele; the cavity in a gastrula or developing embryo from which the digestive tract develops.
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