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 NAAG on the motivation of heroin self-administration under the PR schedule. Pretreatment with NAAG (50 and 100 μg/10 μL in each nostril) but not LY341495 alone (1 mg/kg, i.p.) significantly inhibited the break-point. The inhibitory effect on the break-point of NAAG (100 μg/10 μL in each nostril) slightly recovered but had no statistically significant difference from the combined treatment with LY341495. (*P < 0.05 compared with control group).
