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.
CSC models. (A) The intrinsic model suggests that specific subpopulations within a tumor (pink cells) possess the functional properties of CSCs. (B) The extrinsic model proposes that all tumor cells are functionally equivalent and display heterogeneous behaviors as a function of extrinsic (microenviron-mental) cues.
