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.
Representative cumulative records of responses (vertical steps) and infusions (downward deflections) during food-maintained operant sessions for adults with previous cocaine exposure during adolescence (upper panels) or adulthood (lower panels)
