In theory, a skin cell from a man could be turned into an egg and a skin cell from a woman can become a sperm. Then there's the possibility of a child having multiple genetically related parents ...

This could be egg-cellent news for women struggling with infertility ... embryo-forming eggs from underdeveloped cells. A research team from Japan says it has developed a new egg maturation ...

With more women freezing eggs past the age of 35, when chances of conceiving fall, Prof Adam Balen said: "Egg freezing does not guarantee a baby." However, Dr Jara Ben Nagi says freezing can help ...

For the first time, Northwestern Medicine scientists have identified a population of long-lived proteins in the ovaries which ...

which are hollow balls of cells, each with an immature egg (or ovum) in the center. A girl is born with all the eggs she will ever have. Male: While women are only fertile during a few days in ...