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.
Illustration depicting the associations between neurons and glial cells in the CNS. The CNS is composed mainly of neurons and glial cells (astrocytes, oligodendrocytes and microglia). Glial cells are essential for the survival of neurons as they supply trophic factors to the neurons. (A and B) Phase contrast images show a (A) glial cell and (B) neuron. CNS, central nervous system. Magnification, ×20.
