A study by Steven Goldman, which was detailed in the journal Nature Medicine, reported that injecting neurons derived from human embryonic stem cells into rats suffering from Parkinson’s-like symptoms allowed the animals to regain movement.
Up to 80% of the stem cells began functioning like dopamine-producing neurons. While benign tumors formed around the injection site, Goldman thinks it was caused by neural cells that did not transform into neurons.
He is aiming to eliminate this reaction by injecting only neural cells that will become neurons.
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