USGS Avian Flu Research
![Image: USGS Avian Flu Research](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/NWHC_lab.jpg?itok=jmD-4Vcu)
Detailed Description
A biological technician of the USGS National Wildlife Health Center tests chicken eggs inoculated with a field sample from wild birds to detect the presence of avian influenza virus.
Sources/Usage
Public Domain.