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.
Ultrastructural localization of Pontin. a HeLa cells were synchronized in S-phase and Pontin was detected by the anti-Pontin (5G3-11) monoclonal antibody by means of electron microscopy. In this nucleolar section, Pontin is specifically enriched in a fibrillar center. b Detail of picture a. f fibrillar centers, d dense fibrillar components, g granular components
