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.
(Top) SDS-PAGE of cardiac myosin heavy-chain (MyHC)-α and MyHC-β protein isoforms in C. lateralis. (Bottom) MyHC isoform protein profiles of ventricles from ground squirrels, hibernating during the months of November through to March. Hibernators include animals that displayed torpor in 4 and 20°C hibernacula. October individuals show a seasonal increase in MyHC-α prior to hibernation; 20°C March individuals show a return to pre-hibernating isoform profiles.
