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.
Model of the Sindbis virus-induced apoptotic pathway. Different death stimuli appear to activate distinct upstream caspases, as determined on the basis of inhibitor profiles. Upstream caspases activate downstream caspases, leading to cell death. The presence of an alternate caspase-independent pathway cannot be ruled out.
