Human Fertilisation and Embryology Bill [Lords]

The hon. Gentleman may be aware of the comments of the Parkinson's Disease Society, which has said:"““Although there have been some very promising developments in research using adult stem cells in some disease areas, this avenue has not yet proved fruitful for many conditions including Parkinson's.””" While the hon. Gentleman may wish that there were an alternative to the use of admixed embryos in every case, does he not realise that he is closing off the opportunity to cure many serious diseases such as Parkinson's?