Mice born from embryos cultured in the laboratory showed behavioural differences from normal mice, according to a study. The mice showed signs of extra anxiety - and performed worse in memory tests. The finding, published in the Proceedings of the National Academy of Sciences, suggests the lab dish environment may have an effect. The Penn State University researchers said human IVF specialists should take note of the findings. They stressed it was too early to suggest the same could be happening to human IVF embryos. However, they said it might be wise to minimise the effects of the culture solution on the embryo by avoiding undue delay between fertilisation and implantation during IVF.
