Sunday Explainer: how a paralysed man walked again

By Kate Hagan
Updated November 12 2014 - 10:08am, first published October 26 2014 - 12:15am

A paralysed man has begun to walk again after pioneering surgery injected cells from his nasal cavity into his spine. How was this possible - and what does it mean for others with spinal injury? Kate Hagan stitches together the evidence.

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