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.
The evolution of cancer. After initial formation of cancer cells, growth of the tumor attracts blood vessels to supply oxygen and nutrients. Cancer cells then spread via these vessels forming metastases at distant sites. Mutations in DNA result in a heterogeneous population of cancer cells, with the potential of an increase in resistance against medicine. Patient care is depicted during the time of this evolution.
