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.
Maintenance of the H1 hESC line. (a) Colony of H1 hESC showing the morphology typical of pluripotent stem cells, including prominent boarders (×20 magnification). (b) Expression by H1 hESC of the transcription factor Oct-4 and the surface marker SSEA-4, both of which correlate with pluripotency. Dead cells were removed from flow cytometric analysis using 7-AAD staining. Open histograms represent appropriate isotype controls.
