You can see the results above in a 3D model obtained from a maize root.
This is a destructive process, as the scanned object is placed on a moving platform, where the laser progressively zaps exterior layers. Each exposed layer is imaged, and these images are then combined in software to produce a full-color 3D model of the original object. But you kind of lose the object, slightly. Well, totally.
3D printing such models could be useful for teaching medical and anatomy students the interior structures of biological objects, but there could be a more fascinating use in the distant future.
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