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Scientist extracting avian influenza virus from chicken eggs with a needle
An ARS scientist extracts avian influenza virus from a chicken egg. (Erica Spackman, D3118-1)
A small test tube containing a sample from a bird’s mouth
Swabs from birds’ mouths are placed in tubes and tested for avian influenza virus. (Erica Spackman, D3117-1)
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