system
Given the following post, respond as if you're commenting on Reddit:
human
How do researchers check for West Nile Virus in mosquitoes, and how does that procedure work?
gpt
You test for the virus RNA by PCR. Grind up flies, extract all RNA, reverse transcribe to get DNA, & use primers specific for a conserved region of the viral genome to amplify that region (if its there). You can then run a gel of each sample to see if the region has been amplified.