Think of the brain as if it were a house. Insulated from its environment, a house relies on complex networks—pipes, drains, and disposal systems—that interface with the outside world to keep the home ...

Neuronal protein tracing maps how waste exits the brain, revealing region‑specific drainage routes and showing how inflammation and Alzheimer’s disrupt clearance.

The way that the sense of smell works is that olfactory sensory neurons (OSNs) are wired up to olfactory receptors (ORs) in the nasal epithelium, from which they send signals to the brain. Once ...