A simple breath test could be used to diagnose lung infections such as TB by identifying bacterial "fingerprints", scientists have said.
Researchers from the University of Vermont distinguished between different types and strains of bacteria by testing the breath of mice.
A scaled up version of the technique could reduce the time it takes to diagnose lung infections in humans from days and weeks to just minutes, it is claimed.
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"We've never actually spoken so publicly about her," the Duke of Cambridge said. "But we felt that this was the right time to do it."