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 (±SEM) number of responses on the active and inactive levers for each of six treatment conditions. SAL=saline; NIC=nicotine, 0.2 mg/kg; MEC 1= mecamylamine, 1 mg/kg; and MEC 3= mecamylamine, 3 mg/kg. * indicates significant difference from SAL-SAL active lever (p<0.05). # indicates significant difference from SAL-NIC active lever (p<0.05).
