Fig. 6. Influence of γ-acetylenic GABA on KAT I, KAT II and KAT III activity in human saliva. Six saliva samples were used. Data represent the mean ± SEM and the controls, expressed as 100%, are the activity of KAT I, KAT II and KAT III in the absence of γ-acetylenic GABA under standard assay conditions as described in the Materials and Methods. *p<0.05 vs control (Student's t-test).