The blastula stage is an early stage where the fertilized egg divides and becomes a cell with many cells.

The activity of brain cells directly affects our thoughts and actions.

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

Stem cell research is opening up new frontiers in medicine.

Cell division is one of the basic processes of life.

The cell nucleus holds genetic information.

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

Somatic cells are part of the cells that make up an organism's body.

Oocytes play an important role in the reproduction of organisms.

Olfactory cells play an important role in allowing us to sense smells.