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.
Box plots of the last ratio completed by WT (solid circles), HET (gray filled circles) and SERT KO mice (open circles) when responding for 12% (w/v) ethanol under a progressive ratio schedule. Values plotted are means for each mouse for the five sessions in which the stability criteria were initially met. Boxes around points represent the mid-fifty percent values.
