1) Conceptus 2) Embryo 3) Fertilized egg
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https://www.crosswordclues.com/clue/gastrula
• (a.) Of or pertaining to a gastrula. • (n.) An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the blastosphere) on one side, thus giving rise to a double-walled sac, with one opening or mouth (the blastopore) which leads into the cavity (the archenteron) lined by the inner wall...
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http://thinkexist.com/dictionary/meaning/gastrula/
early multicellular embryo, composed of two or more germinal layers of cells from which the various organs later derive. The gastrula develops from ... [3 related articles]
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http://www.britannica.com/eb/a-z/g/12
Embryonic stage of an animal when gastrulation occurs, follows blastula stage. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973
(gas´troo-lә) an embryo in the stage following the blastula or blastocyst; the simplest type consists of two layers of cells, the ectoderm and endoderm, which have invaginated to form the archenteron and an opening, the blastopore. In human embryos the gastrula stage occurs during the third week, as the embr...
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http://www.encyclo.co.uk/local/21001
Embryonic stage of an animal when gastrulation occurs; follows blastula stage.
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Gas'tru·la noun ;
plural Gastrulæ [ New Latin , dim. from Greek ... the stomach.]
(Biol.) An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the
blastosphere ) on one side, thus giving rise to a double- walle...
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http://www.encyclo.co.uk/webster/G/13
Type: Term Pronunciation: gas′trū-lă Definitions: 1. The embryo in the stage of development following the blastula or blastocyst; in lower forms with minimal yolk, it is a simple double-layered structure consisting of ectoderm and endoderm enclosing the archenteron, which opens to the outside by way of the blastopore; in forms with ...
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http://www.medilexicon.com/medicaldictionary.php?t=36516
An early embryo at about the third week of gestation, following the blastula. The gastrula consists of a disk that is made up of ectoderm, mesodern and endoderm.
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http://www.pregnology.com/
An early stage of the developing embryo that follows the blastula stage.
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http://www.thehorse.com/Glossary.xhtml?L=G
[
n] - double-walled stage of the embryo succeeding the blastula
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http://www.webdictionary.co.uk/definition.php?query=gastrula
noun double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
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https://www.encyclo.co.uk/local/20974
No exact match found.
