This 3D view of a fly's brain shows even a simple insect's neural network can be large and complex. The accompanying video points to different areas of the brain that do different things, but it's important to keep in mind that they entire structure is densely interconnected. The images are the result of new scanning technology, which is described in this article. " Expansion microscopy (ExM) involves fixing tissue and then expanding it like a balloon while keeping the relative positions of internal structures unchanged." Via Gerald Ardito.
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