But MRI has allowed us to visualize the brain's structures so we have a map in our head of where to go and where to avoid.

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But even with the outcome of the nomination all but certain, South Dakotans feel that Tuesday's primary has put them on the political map, says Bob Burns, head of the political science department at South Dakota State University.

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"To blow the bridge is nothing, " Golz had said, the lamplight on his scarred, shaved head, pointing with a pencil on the big map.

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