Chemotherapy treatment during pregnancy may affect the future fertility of unborn baby girls, a study suggests.
Researchers have found that a drug called etoposide can damage the development of mouse ovary tissue grown in the lab. The drug affects specialised cells called germ cells, which give rise to eggs. Further research is needed to assess whether the drug has similar effects on human tissue.
Experts say their findings may mean that affected baby girls should be warned in later life that they may undergo an early menopause.