Figure 1.
Collective migration at all scales. Collective migration is found at practically all levels, from self-propelled particles to bacteria, cancer and animals.
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.