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.
In situ hybridization of NANOG in the human pre-implantation embryo. a 2-cell embryo, day 1. b 4-cell embryo, day 2. c 8-cell embryo, day 3. d morula, day 4. e late day 4 embryo. f blastocyst, day 5. g mouse ESCs hybridized with human NANOG primer
