It seems the use of embryonic stem cells is likely to expand.
Scientists have made the first human embryonic stem cells of a high enough grade to use in patients and deposited them in a public stem cell bank for development in human trials by drug companies and researchers by 2014.
“This first batch of cells is the culmination of nearly 10 years of research. This is a significant milestone,” said Peter Braude, who led the King’s team.
The hope is that the cells will be grown and processed by the bank to feed cell stocks for human trials and, beyond that, patient treatments.
The UK Stem Cell bank already has more than 90 research grade stem cell lines for use in laboratory studies, but as yet has no clinical grade xeno-free lines for use in human trials.
If I understand the article correctly, the clinical use of embryonic stem cells in humans has been delayed because of problems with purity.