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.
Cross-sectioned counted cell density in OVEC (n=1). OVEC was divided into three equal zones representing the exterior outer surfaces, the center of the section and the bottom zone. From the seeded surface, the cell density increased with increasing depth to the center and decreased below to the lower exterior surface.
