Thursday, July 9, 2009 | The article by Vanessa Flores on stem cell therapy for spinal injury was an excellent discussion of the ethical issues associated with the experimental treatment. But there is more.

I can claim to be a stem cell expert based on studies we did over 30 years ago on bone marrow stem cells and I would prepare a loved one of mine for failure in this current trial.

Studies in rats do not offer much insight to humans, and in early phases of a research field, successes tend to be exaggerated by ambitious Assistant Professors and biotech companies like Geron.

The ethical concerns are real and the scientific concerns are even more real.

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