When patients have a certain kind of brain surgery to treat epilepsy at Auckland City Hospital, some of the tissue, with their consent, is sent over the road to the Auckland University for research.
The operation removes part of the temporal lobe. It is the most common operation to treat epilepsy and has a reasonably good cure rate: up to 70 per cent of patients are left free of seizures that impair consciousness or cause abnormal movements.
The tissue sent to the university is considered vital for producing new insights into epilepsy.
"We are able to keep these cells alive - straight off the operating table - in our bio-bank and study their characteristics and do detailed studies on human brain cells. That is ground-breaking," said Professor Richard Faull, director of the university's Brain Research Centre.
"We can compare those cells with other cells from brains that have been bequeathed to us from people who have died of Alzheimer's, Parkinson's, Huntington's disease or motor neurone disease and say what is the difference between these cells which result in different types of diseases.