http://news.bbc.co.uk/2/hi/health/8401508.stm

Scientists are to test if boosting the immune system can prevent the return of the childhood cancer neuroblastoma.

The disease - a cancer of developing nervous system tissue - is most often found in under-fives and accounts for about a sixth of child cancer deaths.

The European trial builds on early promising results from a US study which found immunotherapy improved the chances of survival from the disease.

Cancer Research UK is funding the trial for 160 UK children over four years.