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FIG 1. Voxel placements are shown on the diffusion tensor sequence for the determination of the average diffusion constant (Dav).FIG 2. Graph plots values for the anisotropy in the genu and splenium of the corpus callosum versus the measured peripheral viral load levels (HIV messenger RNA copies/mm3). An inverse trend is observed. As the viral load levels increase, the anisotropy of these structures decreases
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