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.
Duration of freezing response in the fear conditioning test by male (a) and female (b) offspring from normal litters (NL) and small litters (SL). Data are presented as the mean ± SEM. *p < 0.05; ***p < 0.001 compared to NL/non-conditioned group. ##p < 0.01; ###p < 0.001 compared to NL/conditioned group
