The bacteria, in other words, keep proliferating and the white cells keep coming.

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The gregarious are therefore at greater risk than the lonely of catching viruses, and Dr Cole thus suggests that past evolution has created a mechanism (the details of which remain unclear) which causes white cells to respond appropriately.

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This is done by examining the combined concentration of gray and white matter, or nerve cells and fiber tracts, in parts of the brain not normally used for verbal processing the hippocampus and cerebellum, normally associated with memory and motor learning.

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One experiment measured the brain structure of pathological liars, and compared it to normal controls more specifically, the ratio of gray matter (the neural tissue that makes up the bulk of our brains) to white matter (the wiring that connects those brain cells).

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It depends on a recent body of work which suggests that the brain's white matter (the wiring that connects the main bodies of the nerve cells, or grey matter, together) is less dense and less abundant in the brain of an autistic person than in that of a non-autist.

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Firefighters who responded to the incident reported dense clouds of white smoke and two small flames on the outside of the box that contained the battery cells.

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Researchers from Hammersmith and Ealing Hospitals compared the way cells in a major artery function in 26 healthy people of Indian origin and 18 white men aged 35-60 who had no heart disease.

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Mr White said more recently it had been used in Scotland as a "scaffold" for "patients cells to be grown and either implanted or put back in the body".

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