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.
Mean percent freezing to tone in rats that underwent control (black circles) versus maternal separation for 15 min (Separated) per day on PND 2–14 (white circles) across habituation (A), conditioning (B), extinction (Day 1, C), and recall of extinction (extinction Day 2, D) trials. Vertical bars represent SEMs.
