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.
Extinction curves for rats classified as high (HE Phenotype) versus low (LE Phenotype) extinguishers based on differences at 24-h recall. Freezing to context was not significantly different between the two phenotypes, but there was a significant difference in freezing throughout extinction (repeated measures main effect, P < .001)
