We do know all the limitations of adult stem cells, although researchers have been able to push them a bit. But you don't know that embryonic stem cells are useless. We won't know for sure without the research that you want to block! And the potential payoff is huge.
We do not know the limitations of adult stem cells. The article says as much.
Why is your hope so unlimited in embryonic stem cells but so narrow in the case of adult stem cells? Why can't scientists who you hope will be able to solve the induction problems, the propensities of embryoninc stem cells to develop chromosomal and genetic defects and to form tumors in vivo, and the probability of tissue incompatibility also solve/ instead solve the problem of de-differentiation and induction in adult stem cells?
BTW,
http://www.washingtonpost.com/wp-dyn/articles/A29561-2004Jun9.html
""Stem Cells An Unlikely Therapy for Alzheimer's
Reagan-Inspired Zeal For Study Continues
By Rick Weiss
Washington Post Staff Writer
Thursday, June 10, 2004; Page A03
Ronald Reagan's death from Alzheimer's disease Saturday has triggered an outpouring of support for human embryonic stem cell research. Building on comments made by Nancy Reagan last month, scores of senators on Monday called upon President Bush to loosen his restrictions on the controversial research, which requires the destruction of human embryos. Patient groups have also chimed in, and Senate Majority Leader Bill Frist (R-Tenn.) on Tuesday added his support for a policy review.
It is the kind of advocacy that researchers have craved for years, and none wants to slow its momentum.
But the infrequently voiced reality, stem cell experts confess, is that, of all the diseases that may someday be cured by embryonic stem cell treatments, Alzheimer's is among the least likely to benefit. ""