Figure3Large.gif (3263 bytes)

 
Figure 3
Response pattern of a representative rat self-administration SKF82958 30 mg/kg/inj alone and in combination with SCH23390 (0.1, 0.3, 1, 3, 10 mg/kg/inj).  Each vertical tick mark represents one self-injection.  Total self-injections per 3 h session are shown at the end of each line.  (SK=SKF82958, SC=SCH23390)