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 repeated pretreatment with CJB 090 (17.8 mg/kg) or vehicle on response rate under the second-order schedule of i.v. cocaine injections. Right panel: Comparison of response rates after pretreatments during sequential components of cocaine (0.10 or 0.30 mg/kg/inj) self-administration. Data are means ± SEM (n=5).
