germinal vesicle

American  

noun

Embryology.

1. the large, vesicular nucleus of an ovum before the polar bodies are formed.

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germinal vesicle British  

noun

1. biology the large nucleus of an oocyte before it develops into an ovum

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Etymology

Origin of germinal vesicle

First recorded in 1850–55

Example Sentences

Two-cell ATAC-seq enrichment for a random set of promoters were similarly analysed as a control. c, Heat maps showing expression levels of possible minor ZGA genes activated at the two-to-four-cell stage for their expression in germinal vesicle oocytes, MII oocytes, and two-to-four-cell embryos.

From Nature

The eggs of animals lower than the birds have usually only three parts, viz. the germinal spot or dot, the germinal vesicle, and the vitellus or yolk; the first being contained in the vesicle, and that again in the yolk.

From Project Gutenberg

These began in 1875 and following years with a careful examination of the behaviour of the germinal vesicle in the maturation and fertilization of the ovum.

From Project Gutenberg

The nucleus of the o�cyte is called the germinal vesicle.

From Project Gutenberg

The next step taken in advance is the division of the cell in two;—there arise from the single germinal spot two new kernel specks, and then, in like manner, out of the germinal vesicle two new cell-kernels.

From Project Gutenberg