Effects of BU08028 on PC (A), global activity (B), cocaine-induced CPP (C), and cocaine-induced activity (D). Data are mean (± S.E.M.) percentage of time spent in drug-paired compartment (A and C) or activity (cm) after the first and last drug injections (B and D). *, significant difference from vehicle control. ▵, significant difference from first injection. †, significant difference from cocaine alone. P < 0.05.