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. 2009 Jan 6;72(1):56–62. doi: 10.1212/01.wnl.0000338622.27876.0d

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Figure 1 Scatterplot showing 11C-(R)-PK11195 binding potentials in frontal cortex of controls, and mild cognitive impairment (MCI) subgroups; PIB-positive (+ve) and PIB-negative (−ve) MCI

The dotted horizontal line shows controls' mean + 2 SD.