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段落1

This is Scientific American 60-Second Health. I'm Dina Fine Maron. Got a minute?

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Snakes still kill tens of thousands of people each year.

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Giving the antidote quickly can be the difference between life and death.

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But many bite victims cannot identify the species of their slithering assailants.

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Which leaves health care workers to make educated guesses about treatment.

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Now a first-of-its-kind study finds that it's possible to analyze snake DNA left in the victim's wound to identify the snake and thus the correct antivenom.

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The preliminary findings were presented November 4th at the annual meeting of the American Society of Tropical Medicine and Hygiene in New Orleans.

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Researchers collected samples from fang wounds from 749 people at three health centers in Nepal.

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They isolated snake DNA, sequenced it and compared it to sequences in a snake DNA database.

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Ultimately they managed to identify snakes responsible for 194 bites, 87 of which had harmful venom.

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Such intricate genetic analysis is still not available in most settings, but could lead to speedier diagnostic methods for bite victims.

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The research team hopes to devise a fast test that would at least rule out certain common venomous snakes.

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The test would analyze DNA along bite marks and scan it for telltale signs of specific poisonous predators.

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Thanks for the minute, for Scientific American 60-Second Health. I'm Dina Fine Maron.

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