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.
Brain secretory cells, scanning electron micrograph by Stephen Gschmeissner—a first prize winner in the 2002 Novartis/Daily Telegraph “Visions of Science” photographic awards.
The swollen tips of these matchstick-like cells secrete a liquid (cerebrospinal fluid) which protects the brain and spinal cord from impacts. These cells are found in the choroid plexus, a layer that lines the cavities within the brain. 
PDF (304.0 KB)
