When the owl swooped, the “blind” mice ran away. This was thanks to a new type of gene therapy to reprogramme cells deep in the eye to sense light.
After treatment, the mice ran for cover when played a video of an approaching owl, just like mice with normal vision. “You could say they were trying to escape, but we don’t know for sure,” says Rob Lucas of the University of Manchester, UK, co-leader of the team that developed and tested the treatment. “What we can say is that they react to the owl in the same way as sighted mice, whereas the untreated mice didn’t do anything.”
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