Scientists at Stanford University of Medicine have developed a radical new treatment to stimulate egg production in infertile women who suffer from 'primary ovarian insufficiency' a condition that causes early menopause.
Dr Aaron Hsueh and Yuan Cheng, who made the discovery, explained their work in a video produced by Stanford University.
The scientists said the treatment could be a "real breakthrough" in treating infertile women, but that more studies, particularly on women whose infertility is caused by other factors, is needed.
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Sir Bruce Forsyth, Sir Cliff Richard and the Prime Minister have been among those paying tribute to Cilla Black following news of her death.
TV favourite Cilla Black, who has died aged 72, gave viewers a "lorra, lorra laughs" during her long career.
Some rain in the north. Very warm sunshine in the south