Neuroscience

Subtle chemical changes in brain can alter sleep-wake cycle

A study out today in the journal Science sheds new light on the biological mechanisms that control the sleep-wake cycle. Specifically, it shows that a simple shift in the balance of chemicals found in the fluid that bathes ...

HIV & AIDS

HIV can spread early, evolve in patients' brains

The AIDS virus can genetically evolve and independently replicate in patients' brains early in the illness process, researchers funded by the National Institutes of Health have discovered. An analysis of cerebral spinal fluid ...

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