Fig. 7
The effects of levodopa, betaine and benserazide treatments on dopamine level in control and treated rats. Values represent mean ± SEM of dopamine (mmol/ml serum). *P < 0.05 versus levodopa and LD/Bet. groups. There was no significant difference among the other groups (P > 0.05). LD levodopa, Bet. betaine, Ben. benserazide