Defective embryos 'self-correct'
IVF embryos with defective chromosomes stand a reasonable chance of "self-correcting" and delivering healthy babies, research has shown.
An Italian study found that even when more than half the cells were abnormal, they produced a live birth rate of 16.7pc.
But the research also showed that embryos with a lower level of abnormality resulted in a much higher birth rate of 39.5pc.
The study of 73 women helps resolve the controversial issue of when to transfer embryos created by In-Vitro Fertilisation to the womb and when to discard them. Until recently, almost all "mosaic" embryos containing a mixture of chromosomally normal and abnormal cells were discarded.
The new research shows that mosaic embryos fall between two stools in terms of their ability to implant and develop.