Second cleavage in the mouse typically yields 4-cell conceptuses with three distinct types of blastomere. While both products of the meridional division include all axial levels of the zygote, those of the equatorial division acquire only its vegetal or animal half.
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This record was last updated on 07/03/2016 and may not reflect the most current and accurate biomedical/scientific data available from NLM.
The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/12456621