We just learned about the Cell Growth and Division where cells get bigger, multiply and don't go away.
Another one of the six signs of cancer is called Anti-Growth Signals.
When the cells in the body grow or multiply, and don't die off or go away, the body uses things called "tumor supressor genes" to send messages to the cells saying that it is time to stop growing and dividing, and to go away.
It's kind of like being in a car, going too fast, and you hit the brakes to slow down or stop.
Cells that have been mutated into cancer don't listen to those messages and they keep growing.
This would be like the brakes in the car not working, so it keeps going too fast.
If the cancer cells in the body do not listen, the cells can grow and divide and spread over the body.
(from: wikipedia - tumor suppressor gene)
Kid Facts - Blast from the past: Meibomian Gland
