The content is available as a PDF (150.0 KB).
. 2001 Jun 15;21(12):RC151. doi: 10.1523/JNEUROSCI.21-12-j0002.2001
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.