Figure4Large.gif (2968 bytes)

 
Figure 4
Response pattern of a representative rat self-administration SKF82958 30 ug/kg/inj alone and in combination with eticlopride (0.3, 1, 3, 10 ug/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, ET=Eticlopride)