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Regional brain uptake of radioactivity after intravenous administration of [11C]3 to monkey – dependence on pre-administered dose of DCPQ. Key: frontal cortex (■); anterior cingulate (▲), hippocampus (●), occipital cortex (□) and cerebellum (▽). Temporal cortex, parietal cortex and putamen gave intermediate curves, but are not shown for Figure clarity.
