mesomere


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mesomere

[′me·zō‚mir]
(embryology)
The muscle-plate region between the epimere and hypomere in vertebrates.
References in periodicals archive ?
For example, contrary to expectations, 16% (8/51) of labeled an2 mesomeres in Lytechinus variegatus formed both ectoderm and endoderm (Logan and McClay, 1997).
In embryos of many sea urchin species, A-V polarity is evidenced by the unequal sizes of blastomeres of the 16-cell embryo, which consists of tiers of eight mesomeres, four macromeres, and four micromeres.
Interactions of different vegetal cells with mesomeres during early stages of sea urchin development.