| AD | Alzheimer’s disease |
| BBB | Blood–brain barrier |
| CNS | Central nervous system |
| CSF | Cerebrospinal fluid |
| EV | Extracellular fluid |
| PCA | Principal component analysis |
| PEA | Proximity extension assay |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.