VACCINIA

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Cowpox virus virions, used in the preparation of the smallpox vaccine. An electron micrograph of Vaccinia virions; a virion is a single complete and infectious virus particle. Vaccinia virus is normally confined to cattle, but is conveyed to humans through vaccination, thereby, imparting immunity to the smallpox Variola virus.

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Size: 3630px × 2447px
Photo credit: © CDC/SGO / BSIP / Alamy / Afripics
License: Licensed
Model Released: No

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