Advances in regenerative medicine point to a promising future for all humankind. JOHN Chen is 65 years old, and just retired. What worries Mrs Chen is that her husband is beginning to have difficulty in remembering where he has put his keys, or what he has read in a book after just a few hours.
After consulting a neurologist and doing a brain scan, John is diagnosed as showing the onset of Alzheimer's disease, a disease that is, at the time, already affecting one in a hundred people globally.
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