Human eggs fully grown in lab for first time, raises hopes of infertility treatment

Major breakthrough offers hope to women in danger of being left infertile from treatments such as chemotherapy

Women with more than 10 sexual partners may be infertile

Research also pointed out that women who had become sexually active at a very young age are eight times more likely to be infertile.

There's a chance that the egg cells have been fertilised by sperm other than that of the intended father.

Stimulating the metabolism of SSCs could improve their proliferation. However, more careful study of the molecular pathways is necessary.

The waste DNA comes from small cells called polar bodies that form off eggs and contain the same genetic material as in woman's egg nucleus.