List out any four salient features of cancer cells.

Cancer is characterized by uncontrolled cell division.
* They lack contact inhibition and grow rapidly.
* They detach easily due to lack of cadherins. They cause secondary tumors (Metastasis).
Cadherins are intercellular adherence proteins.
* They do not undergo apoptosis. Apoptosis is also known as programmed cell death.
* They promote angiogenesis.(development of blood vessels for nutrients to tumours).