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.
Effect of E2 expression on SA β-gal activity. HeLa/sen2 cells were stained at pH 6.0 with X-Gal (5-bromo-4-chloro-3-indol β-d-galactopyranoside) as described (29) 10 days after mock-infection (Left) or 15 days after infection with the E2 virus (Center and Right) and photographed by using brightfield optics at ×100 magnification.
