text: In the present study, we compared the pharmacology of (+/-)pindolol, WAY-100635 (a 5-HT(1A) antagonist), GR127935 (a 5-HT(1B/1D) antagonist), and << isamoltane >> (a [[ 5-HT(1B) ]] antagonist), when given acutely in combination with fluoxetine, using in vivo microdialysis in the frontal cortex of the freely moving rat.