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Any of the cells resulting from the cleavage of a fertilized ovum during early embryonic development.

blas′to·mer′ic (-mîr′ĭk, -mĕr′-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adj.1.blastomeric - of or relating to a blastomereblastomeric - of or relating to a blastomere  
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In other experiment, Martinez-Brown (2007) reported that egg quality, in terms of blastomeric morphology, showed significantly better scores in the embryos of broodstock fed frozen mojarra juveniles and squid than in the ones from broodstock fed with artificial experimental diets with two levels of protein (45 and 55%) and three levels of essential fatty acids (20:4 n-6, 20:5 n-3 and 22:6 n-3) (0.3, 1 and 4%, respectively).
TRICHIURA EGGS IN THE SOIL: Initially, the unsegmented ova started growing to the blastomeric stage in about one to two weeks in the soil.