He is receiving treatment for brain radiation.

He is all muscles, just like a meathead.

He lost his memory due to damage to the cerebral lobe.

I was so excited watching this movie that my endorphins were overflowing.

Cytology is a branch of biology that studies the structure and function of cells.

Stem cell research is opening up new frontiers in medicine.

The cell nucleus holds genetic information.

The cell membrane plays an important role in maintaining the structure of the cell.

Cell division is one of the basic processes of life.

Germ cells play an important role in the reproduction of organisms.