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Microbiological and Chemical Exposure Assessment


Poliovirus image

Photo Credit: F.P. Williams, U.S. EPA

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Note that poliovirus particles exhibit a basically featureless appearance in comparison to other small viruses such as astrovirus, Norwalk virus and other SRSVs, and typical (non-SRSV) calicivirus. Bar = 50 nanometers.

Source: Cell culture.

Method: Negative-stain Transmission Electron Microscopy

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