AUG 07, 2013 02:56 PM PDT
Flu Attack! How A Virus Invades Your Body
POSTED BY: Jennifer Ellis
305 71 20408

When you get the flu, viruses turn your cells into tiny factories that help spread the disease. In this animation, NPR's Robert Krulwich and medical animator David Bolinsky explain how a flu virus can trick a single cell into making a million more viruses.

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