An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
PPV-1 infection in ST cells. (a) Negative staining electron micrograph of PPV1-HLJ202108-Y virus cultured in ST cells. (b) Negative staining electron micrograph of PPV1-SDLC202109 virus cultured in ST cells.