Medical research

A study reveals potential causes of female infertility

Over the last six years a group of Estonian geneticists led by Associate Professor Agne Velthut-Meikas and Ph.D. student Ilmatar Rooda from the TalTech Department of Chemistry and Biotechnology have studied genes previously ...

Obstetrics & gynaecology

Demand for fertility preservation increasing for women

(HealthDay)—The demand for fertility preservation is increasing, and methods to address it include oocyte cryopreservation and ovarian-tissue cryopreservation, according to a review article published online Oct. 25 in the ...

Genetics

The influence of the mother: Maternal epigenetic inheritance

(Medical Xpress) -- A study published in Genes and Development from scientists at the Friedrich Miescher Institute for Biomedical Research pinpoints the importance of maternal epigenetic influences during early embryogenesis ...

Medical research

'Cellular memory' of DNA damage in oocyte quality control

Females are born with a finite number of eggs that are steadily depleted throughout their lifetime. This reserve of eggs is selected from a much larger pool of millions of precursor cells, or oocytes, that form during fetal ...

Obstetrics & gynaecology

The more eggs the better in IVF?

A higher number of eggs retrieved in an IVF treatment cycle is independently associated with more chromosomally normal embryos available for transfer, according to a new Australian study. However, the benefit of a greater ...

Medical research

Obesity, infertility and oxidative stress in mouse egg cells

Excessive body fat is associated with negative effects on female fertility and pregnancy. In mice, maternal obesity impairs proper development of egg precursor cells called oocytes. In a recent paper published in Molecular ...

Genetics

Do ovaries continue to produce eggs during adulthood?

A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women ...

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Oocyte

An oocyte, ovocyte, or rarely ocyte, is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC) which undergoes a mitotic division to form an oogonium. During oogenesis the oogonium becomes a primary oocyte (pronounced oh'a-site).

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