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Associated Press
In this photo provided by Katrin Amunts, Karl Zilles, Alan C. Evans, researchers use a microtome to cut sections from a brain preserved in paraffin wax into slivers 20-micrometers thick, resulting in over 7,400 slices. A digital three-dimensional model called "BigBrain" was produced from the thousands of sections. Its resolution is finer than a human hair, so it can reveal clusters of brain cells and even some large individual cells. It is being made available to scientists around the world. The researchers, from Germany and Canada, reported their work Thursday, June 20, 2013 in the journal Science. (AP Photo/Katrin Amunts, Karl Zilles, Alan C. Evans)

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