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A blastomere of large size, as in amphibians.
[macro- + G. meros, part]
macromere/mac·ro·mere/ (mak´ro-mēr) one of the large blastomeres formed by unequal cleavage of a zygote as a result of asymmetric positioning of the mitotic spindle.
One of the large blastomeres found in a developing embryo.
macromerea large cell from the vegetative pole of a developing egg. Such a cell contains yolk and gives rise to the ENDODERM of the embryo.
one of the larger cells (blastomeres) formed in unequal cleavage of the fertilized ovum (at the vegetal pole).