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.
Observed immune system features during chicken embryogenesis. Caveat: This figure summarizes observations reported in the scientific literature. They correspond to specific studies each performed at specific time points and do not represent the extent of immune system features over the embryogenesis. Thus, it cannot be interpreted as an accurate depiction of the immune system development in ovo, since most papers do not cover the entire development period.
