It's splattered over vampire movies, TV shows and crime novels. But the bloody reality of guts and gore is even more fascinating than the fiction, writes New York pathologist Jonathan Hayes.
Scientists have developed a quick and simple way to diagnose endometriosis, without requiring surgery. All that is needed is a small sample of womb lining, taken in a similar way to a smear test, that can be checked for the presence of nerve fibres.
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