germinal vesicle


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germinal vesicle

n.
The enlarged nucleus of an oocyte before meiotic division is completed.

germinal vesicle

n
(Biology) biology the large nucleus of an oocyte before it develops into an ovum

ger′minal ves′icle


n.
the enlarged, vesicular nucleus of an ovum before the polar bodies are formed at the end of meiosis.
[1850–55]
References in classic literature ?
Nevertheless all living things have much in common, in their chemical composition, their germinal vesicles, their cellular structure, and their laws of growth and reproduction.
In the late phase of this stage, yolk granules occurred in germinal vesicle migration oocytes, which were characterized by a large size and a high number of oocytes (Figs.
In the pre-ovulatory phase, germinal vesicle migration towards the micropyle was detected in most oocytes.
(A) Female reproductive system of Scyphophorus acupunctatus formed by 2 ovaries (ov), germarium (g), vitellarium (v), oocyte (o), lateral oviduct (lo), common oviduct (co), spermatheca (s), and genital chamber (gc); (B) Distal part of the germarium (g) with bulky appearance possibly with trophocytes, prefollicular cells, and oogonia, terminal filament (tf), trachea (tr), tracheoles (trl); and (C) Approach to the onset of vitellarium with oocytes in development, germinal vesicle (gv), interfollicular tissue (tif), trachea (tr), and tracheoles (trl).
3, B and D), the majority of germ cells were in the germinal vesicle breakdown stage and ranged in diameter from 1800 to 2000 pm.
* High dose of co-trimoxazole treatment caused significant structural abnormalities and decreases in ovarian quality, including the number of germinal vesicles and metaphase I and metaphase II of rat oocytes.
In vitro culture and maturation of Germinal Vesicle (GV) oocytes is an efficient method to generate mature oocytes.
PI, prophase I; PMI, prometaphase I; MI, metaphase I; MII, metaphase II; Egr3, early growth response protein 3; GV, germinal vesicle; IBMX, 3-isobutyl-1-methylxanthine.
maximus from the Eastern Gulf of Mexico, Collins and McBride (2015) observed a diel pattern of oocyte maturation in females: germinal vesicle migration of the vitellogenic oocytes occurs in the late morning-early afternoon preceding spawning day.
Germinal vesicle (GV), germinal vesicle breakdown (GVBD), Metaphase I (MI), Anaphase/Telophase I (ATI), and Metaphase II (MII) stages mouse oocytes were collected after being cultured in M16 medium for 0, 4, 8, 9.5, or 14 h, respectively.
The oocyte maturation begins with germinal vesicle migration (GVM, early hydration), going to germinal vesicle breakdown (GVBD, middle hydration) and hydrated oocyte stage (HO, final hydration) when it is previous to spawning (Figure 2e-f).
In fact, supplementation with myoinositol in the IVF technique is positively associated to meiotic progression of mouse germinal vesicle oocytes, enhancing intracellular [Ca2.sup.+] oscillation [17].