Scientists have discovered a chemical signal that can predict whether an embryo will be accepted by the womb, which they hope could dramatically improve the success rates of IVF treatment.
Embryos, which were deemed the most promising were found to give off a chemical called trypsin, the function of which is to prepare the womb prior to implantation.
Nick Macklon, professor of obstetrics and gynaecology at the University of Southampton told the Daily Mail: 'Only about one third of the top-quality embryos are implanting, which means there's a lot of room for improvement.'
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