Part 4/15:
He cites promising clinical developments, such as stem cell therapies for Parkinson's disease, where tailored stem cells are injected into specific brain regions to replace lost neurons. One extraordinary case involved a Parkinson's patient who received just a single injection of dopaminergic precursor cells over 25 years ago; the patient's symptoms vanished for a decade and a half, illustrating the potential potency of these approaches when properly applied.