Dachshund Jasper on a treadmill
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Jasper: the paralysed dog that is walking again

19 November 2012 Last updated at 17:47 GMT

Four years after losing the use of his back legs, dachshund Jasper is able to walk again after taking part in a medical trial.

Cambridge University scientists reversed his paralysis by injecting him with cells grown from the lining of his nose.

Fergus Walsh reports.