'This could have huge potential, as early diagnosis is a key factor in survival rates'
The scientists, who unveiled the at the British Science Festival in Swansea, compared the new test to a smoke detector, because it does not actually find cancer but changes to red cells that occur when cancer is present.
Discovering cancer early is a key factor in successful treatment.
If a tumour is caught in a single part of the body, there is a much better chance that it can be removed surgically.
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