The accumulation of misfolded or damaged proteins in long-lived, non-dividing cells like neurons are linked to neurodegenerative diseases like Alzheimer's. A study now finds that the build-up of these ...

Since the effects of gender-affirming therapy on fertility are unknown, multiple medical societies endorse the preservation of fertility in persons who identify as transgender. 1-3 In transgender male ...

Declining female fertility is a health issue that has received broad global attention. Oocyte quality is the key limiting factor of female fertility, and factors affecting oocyte quality involve the ...

The first follicle wave undergoes atresia to amplify androgen-producing theca cells, while previously unknown wave 1.5 follicles leave quiescence at 2 weeks and produce most of the earliest offspring.

The fertilization of an egg by a sperm is central to human reproduction. A complex biological process transforms immature oocytes into ones that can be fertilized. The process begins in the female ...

Human oocytes can last for up to 50 years—and a newly discovered metabolic pathway is key to this longevity. By Lauren J. Young Published Jul 22, 2022 2:45 PM EDT Get the Popular Science daily ...

Based in Japan, biotech startup Dioseve’s ambitious goal is to grow human oocytes, or eggs, from other tissue. Its aim is to help people struggling with infertility, and it recently raised $3 million ...

A cast of so-called 'nurse cells' surrounds and supports the growing fruit fly egg during development, supplying the egg -- or 'oocyte' -- with all the nutrients and molecules it needs to thrive. Long ...