oocyte

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oocyte

[′ō·ə‚sīt]
(histology)
An egg before the completion of maturation.
References in periodicals archive ?
Meiotic inhibition with different cyclin-dependent kinase inhibitors in bovine oocytes and its effects on maturation and embryo development.
Atretic oocytes at the secondary growth phase were divided into 3 stages, namely: atretic oocytes at stage three (atretic oocytes at cortical alveoli stage, early phase of vacuole formation were detected; Fig.
Accumulation of oocytes and/or embryos by vitrification: a new strategy for managing poor responder patients undergoing pre implantation diagnosis.
Afterwards, they were either sacrificed (so that immature oocytes could be collected) or hormonally induced (~24 h).
Table-II: Correlation of oocytes with ovarian reserve parameters.
Oocytes were harvested from bovine ovaries and pretreated with 10 [micro]g/mL LPS for 22 h.
Furthermore, according to their cellular characteristics, 11 oocytes substages were distinguished: 1) oogonia (Og), 2) chromatin nucleolus (Cn), 3) early perinucleolus (Pn1), 4) late perinucleolus (Pn2), 5) oil globule (Li), 6) yolk globule (yg), 7) early vitellin globule (Ev1), 8) late vitellin globule (Vo2), 9) postvitelogenic (Pvo), 10) germinal vesicle migration (Gvm), and 11) germinal vesicle breakdown (Gvb) (Fig.
Table-2: Analysis of variance (ANOVA) test for follicle-stimulating hormone (FSH) dosage, stimulation time, the number of retrieved oocytes, the number of high-quality embryos, maturing rate and fertilisation rate of oocytes.
On day 16 the endometrium had reached a thickness of 8 mm and 4 MII oocytes from a matched donor were fertilized by ICSI; two embryos (both 4 cell stage, grade I) were replaced after 48 hours.
In contrast to men who produce new sperm cells throughout their life women are born with a finite number of oocytes. When this pool is depleted menopause starts.
Vitrification method is associated with ultrastructural alterations in specific areas of oocyte which is probably related to the decrease of vitrified oocytes competence for Maturity (Wu et al., 2006).