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Read articles, including Science News stories written for ages 9-14, on the SNK website.
VIRAL ORIGINS

Over the last half-century or so, scientists have linked a number of viruses to cancers in humans. Around 20 percent of human cancers are now thought to have a viral culprit. That portion is expected to grow as researchers use improved techniques to uncover more viral genetic material in tumor cells. Credit: Source: Ronit Sarid and Shou-Jiang Gao/Cancer Letters 2011

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