mesomere


Also found in: Medical, Encyclopedia, Wikipedia.

mes·o·mere

 (mĕz′ə-mîr′, mĕs′-)
n.
1. A blastomere of intermediate size, larger than a micromere but smaller than a macromere.
2. The middle zone of the mesoderm of a chordate vertebrate embryo, from which excretory tissue develops.

mesomere

(ˈmɛsəʊˌmɪə)
n
(Physiology) a blastomere of medium size that is formed by certain types of cleavage

mes•o•mere

(ˈmɛz əˌmɪər, ˈmɛs-, ˈmi zə-, -sə-)

n.
1. a blastomere of intermediate size between a micromere and a macromere.
2. the intermediate zone of the mesoderm.
[1900–05]
Translations
mésomère
References in periodicals archive ?
10a-b): Short and broad; basal apodeme comparatively broader, with thick and darkly pigmented struts, anteriorly less sclerotized; basal plate laterally concave; endome and mesomere structure (fig.
rosaceus follows the typical pattern for echinoids with planktotrophic larvae, beginning with three equal cleavages followed by the formation of mesomeres, macromeres, and micromeres at the 16-cell stage (Fig.
Furthermore, only a presumptive ectodermal region derived from eight mesomeres (animal cap) isolated from 16-cell staged embryos formed wrinkles (data not shown).