"This is the first study to show preservation of vision after a single injection of adult-derived human cells into a rat model with age-related macular degeneration," said lead author of the study Shaomei Wang, research scientist at the Cedars-Sinai Board of Governors Regenerative Medicine Institute in the US.

The stem cell injection resulted in 130 days of preserved vision in laboratory rats, which roughly equates to 16 years in humans. For the study, the researchers first converted adult human skin cells into powerful induced pluripotent stem cells (iPSC), which can be expanded indefinitely and then made into any cell of the human body.

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