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blastula

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.03 sec.
blastula /blas·tu·la/ (blas´tu-lah) pl. blas´tulae   [L.] the usually spherical structure produced by cleavage of a zygote, consisting of a single layer of cells (blastoderm) surrounding a fluid-filled cavity (blastocoele).
blas·tu·la (blsch-l)
n. pl. blas·tu·las or blas·tu·lae (-l)
An early embryonic form produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity.
blastu·lar adj.
blastu·lation (-lshn) n.
blastula
the usually spherical body produced by cleavage of a fertilized ovum, consisting of a single layer of cells (blastoderm) surrounding a fluid-filled cavity (blastocoele); it follows the morula stage.
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On day 0, fathead minnow embryos (n = 240) at blastula and morula developmental stages were gathered from mating tiles in the husbandry unit at Brixham Environmental Laboratory.
Effects of ammonium perchlorate on thyroid function in developing ... by Brown, J. Anne / Environmental Health Perspectives
In the fruit fly, the blastula is actually considered one large cell, even though it contains more than one nucleus.
The ghost of Geoffroy Saint-Hilaire: frog and fly genes revive the ... by Travis, John / Science News
For biochemical analyses, we used the material from 22 ripe females at the following stages: unfertilized eggs; embryos at 2-4 blastomeres (2 hr postfertilization), 16 blastomeres (3 hr), early blastula 1 (4.
The sea urchin embryo as a model for mammalian developmental ... by Slotkin, Theodore A. / Environmental Health Perspectives
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