This Is the Most Complete Brain Map to Date, Showing Every Single Neuron in a Fruit Fly's Brain

A team has just created a high-definition, 3D picture of something a little smaller – the brain of a fruit fly. Showing every single one of the brain's 100,000 neurons, it's the most complete brain map ever created. Fruit fly (Drosophila melanogaster) brains are only the size of a poppy seed but still pack in an incredible amount of complexity: the work involved combining around 21 million images taken across more than 7,000 brain slices.

What has emerged at the other end is a fantastically detailed image that scientists can zoom into at the nanoscale, and follow individual neuron pathways.

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