If the activity continues long enough, even the body's fat cells get in the game.

Today's solar cells and associated products are getting better all the time.

Might proliferation occur because the cells in question lacked the essential material and got out of control?

Insulin is a hormone that helps your body's cells get the sugar they need for energy.

All cells use some iron, and must get it from the circulating blood.

Chromatophores change because the cells get a message from the brain.

Every cell in the body gets its nutrients from blood.

Without all of this extensive support, most cells get very sick very quickly.

I'll hide it somewhere, where the cells can get the sun.

Soon, the growing tumor ball needs to increase its blood supply because cells in the middle are not getting enough food and oxygen.