There is a requirement to demonstrate that the research cannot be done using adult stem cell lines. This is an important point which I would particularly bring to the attention of the House. First, it means there is no incentive to use embryonic cells rather than adult cells and it means researchers must thoroughly examine the potential of using adult cells, for which there is also funding available under the programme. No financial gain for donors is permitted. This is in line with related ethical considerations in the area, for example, of organ donations for transplantation purposes.