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.
Spheroids form vesicle structures. Spheroids were formed in nonadherent bioreactors for 7 to 10 days. They were removed from the bioreactor, fixed, sectioned, and stained with hematoxylin and eosin (H&E; a). The hollow structure is confirmed by confocal microscopy through the edge (b) and center (c) of the spheroid.
