동영상
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1st whales from Marineland arrive at U.S. aquariums
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Explosive diarrhea-causing parasite infects more than 1,000 people in U.S.
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Lettuce suspected source of explosive diarrhea outbreak
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Deadly Ebola outbreak spreading at record pace, WHO warns
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Can 'liquid biopsies' detect cancer? Scientists are trying to find out
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New video appears to show Mitch McConnell being loaded into ambulance
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ER wait times exceeding 48 hours: report
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Should we be worried about the latest Ebola outbreak? | 7.30
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