A Glasgow man in his 60s has become the world's first person to receive injections of foetal stem cells into the brain in order to repair damaged nerve tissue caused by stroke.
Doctors who carried out the surgery over the weekend said they do not expect to see any immediate improvement in the man's partial paralysis, as the clinical trial is aimed primarily at testing the safety of the controversial procedure.
The man, who has not been named, has been discharged from Glasgow's Southern General Hospital where the operation was carried out.
He will be monitored closely for the next two years as an outpatient to see if he has suffered any side-effects of the treatment.
Stem cells used in the operation were originally derived from a 12-week-old foetus that was aborted in California in 2003.