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.
Figure 1. Epigenetic progenitor selection. Extraembryonic mesoderm cells progressively acquire the epigenetic makeup of hematopoietic progenitors. Few of these progenitors are selected as dHSCs. The process is manifested by acquisition of hematopoietic potential in standard assays. MФ, tissue macrophages; CFU-C, colony-forming unit in culture; CFU-S, colony-forming unit spleen.
