Female mammals—including humans—are born with all of their egg cells. Of a woman's one to two million egg cells, about 400 ...

But egg cells, or oocytes, are also massive; they are several times the size of an average cell in the body and are around 10,000 times the size of sperm. Egg cells are among the biggest body cells in ...

After trying to conceive for 18 years, one couple is now pregnant with their first child thanks to the power of artificial ...

Keeping egg cells in stasis during childhood is a key part of female fertility. New research published today (1st January) in Nature Structural and Molecular Biology sheds some light on the role ...

Egg cells are our largest cells. They are so large, in fact, that they should have problems distributing proteins and nutrients within themselves. A new study analyzing this little-understood ...

Yet, the ovaries’ roughly 1 to 2 million immature egg cells, known as oocytes, can stay healthy and be successfully fertilized for up to 50 years, hinting to reproductive scientists that they ...

The immature egg cells form inside a female’s body when she’s still a fetus in her mother’s womb, and then they wait in a quiescent state for years, if not decades. Cocooned inside ovaries, they pause ...

Human sex cells, or gametes, are described as haploid – this means they contain half the number of chromosomes of other cells in the body. When a haploid egg cell is fertilized by an equally ...

Maturing egg cells, or oocytes, can be much bigger than other types of cells. This is because they must contain everything required to grow into entire organisms. Their large size has a major downside ...

60 Minutes dives into egg freezing, from the biological case for it to how it works and how much it costs. Latest U.S.

The Saturday Essay. What If Men Could Make Their Own Egg Cells? New technologies for creating genetically related children could transform family life, giving same-sex couples and infertile women ...