Figure 1.
Growth factors as paracrine factors for cancer-associated fibroblasts (CAFs) and tumor cells. Arrows indicate activation or induction symbols. The inhibition symbols are colored in red.
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.