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.
Images of a Prader–Willi syndrome patient (A) and Angelman syndrome patient (B) illustrate the dramatic differences in the clinical features of the disorders resulting from defects in an imprinted region. (Images kindly provided by Dr. Daniel J. Driscoll and Dr. Carlos A. Bacino, respectively.)
