Figure 14.
Mechanisms of L-R asymmetry establishment in various animals. Note that some steps (such as the Nodal-Pitx2 pathway) are conserved, whereas others are divergent.
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.