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.
Effects of 4-nitro-PFEB on nicotine self-administration (0.03 mg/kg/infusion). Values represent the mean (±SEM) number of nicotine (0.03 mg/kg) infusions in 1-h sessions of eight rats per treatment. Significant differences (p<0.05) in number of infusions compared to vehicle as assessed by Neuman–Keuls post hoc are denoted by asterisk
