Here's how: It had been suspected since the 1980s that liver cells get really lonely, really quickly.

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It's a really lonely profession, because everybody's looking to you for answers.

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"It's been a long month really, lots of lonely times wondering and thinking, " Cattermole told BBC Newcastle.

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My long work nights and weekends always ended with a lonely run, a bourbon or two, or a phone call to someone I didn't really listen to.

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