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Paralysed man walks again after cell transplant

21 October 2014 Last updated at 23:27 BST

This report contains scenes of surgery.

A paralysed man has been able to walk again after a pioneering therapy that involved transplanting cells from his nasal cavity into his spinal cord.

Darek Fidyka, who was paralyzed from the chest down in a knife attack in 2010, can now walk using a frame.

The treatment, a world first, was carried out by surgeons in Poland in collaboration with scientists in London.

Fergus Walsh reports.