Figure 3
From: Acupuncture Suppresses Morphine Craving in Progressive Ratio Through the GABA System

Results of the first experiment. (A) Basal levels (means of the BPs of the last 3 days of PR session before the test); (B) BPs on the test session; (C) active lever responses on the test session; and (D) percentages of BP compared with the basal levels. Results are mean ± SEM, one-way ANOVA, and post hoc Tukey test. BP = break point; PR progressive ratio; SEM = standard error of mean; ANOVA = analysis of variance.