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Neurosciences on the rise

Outlook Magazine •
The long, slender axons of neurons that terminate in the mouse superior colliculus — a part of the brain involved in sensation — glow blue and red after infection with fluorescent tracing viruses.
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Inside our heads sits the remarkable human brain, a frontier of biology that still holds many secrets. This incredible organ consists of 86 billion neurons connected by a staggering 100 trillion synapses, numbers so vast that they surpass the number of stars in the Milky Way.