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PET imaging data using [11C]-raclopride to measure dopamine D2/D3R distribution volume ratios in control monkeys (open symbols) and in monkeys treated daily (after 4 weeks) with 1.0 mg/kg (s.c.) THC (closed symbols). Different shaped symbols represent individual subjects. Two monkeys (R-1710, R-1711) served as both control and THC-treated subjects.
