Giving fresh hope to women who are unable to have children, scientists have developed the world's first artificial ovary which is capable of maturing human eggs as effective as a real one. Researchers at Brown University created the ovary in a laboratory from cells donated by hospital patients. They said, it can mimic a real ovary by growing over the eggs and allowing them to mature. Within days, the cells had enveloped the immature eggs and they were able to grow to full maturity, the point at which they would be released into the womb to be fertilised.The breakthrough, the researchers said, could help cancer sufferers who become infertile from chemotherapy or othertreatments which damage the reproductive system. Professor of obstetrics and gynaecology at the Brown University, said the artificial organs could also be used to help discover why some women find it difficult to conceive.