In fact all the cells, whether brain or tissue, are pretty much the same and can simply become what they need to be.

During differentiation the cells become specialized to perform various functions.

Following his death his hermit cell became an important shrine and a church was built there.

Biologists are more concerned about animals in which human cells have become seeded throughout the system.

As they are pushed out, the cells die and become the hair we see.

These cells are round at first but become flat as they approach the surface of the skin.

One man who was attendant to the condemned men said that cell 13 became like a church.

Then the cell (x-1,y-1) must have exactly one neighbor, and will become on in the next step.

Megatron is here to "put his house in order", and nobody can tell how powerful Starscream's cell may have become.

The process by which the cells become specified differs between organisms.