are classified as
TRANSCRIPT
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are classified as because they infect
living cells. Antibodies attach to virus particles to stop them from infecting cells and to signal the liver and spleen to destroy them.
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Image by ArionfxImage by Adenosine
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enzymeVirus Particle
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American Red Cross nurses tend to flu patients in temporary wards set up inside Oakland Municipal Auditorium during the Spanish flu outbreak of 1918.
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Image of patient infected with measles virus.
Image of Measles Virus
The Seneca Indians were
infected with a measles outbreak
because they lacked
immunities to the virus.
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Avian flu (influenza H5N1 viruses) released from
infected human cell
Swine flu (influenza H1N1 viruses)
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Image by Mark Pellegrini