groups of animals were then allocated to a number of separate experiments in which they were systemically injected with anxiolytics ( chlordiazepoxide hcl or sodium amylobarbitone ) , gaba antagonists ( picrotoxin or bicuculline ) , the gaba ( a ) agonist muscimol , the gaba ( b ) agonist baclofen , an antagonist ( ro 15-1788 ) at the benzodiazepine receptor and , an inverse agonist ( fg 7142 ) at this receptor .
C0016904
gaba
C0004609
baclofen