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.
Morphology of supporting cells in selected regions of epithelial cultures. Cultured cells grew as confluent monolayers on fibronectin and laminin substrates. Photographs illustrate the high-density (A), moderate-density (B), and low-density (C) regions of the cultures. Darkly stained BrdU+ nuclei were present in all regions, but the relative numbers of BrdU+ cells were higher in regions of low cell density. Scale bar, 50 μm.
