The cell cycle ensures that we get more white blood cells that flow through our bloodstream to fight viruses, bacteria, and other foreign invaders that threaten our health.
The cell cycle also keeps our cells fresh. In order for our bodies to grow and develop, they must produce new cells—and allow for the death of old cells. Cell division is also an essential component of injury repair. If our cells couldn’t divide and create new cells, our bodies could never produce new skin cells to heal road rash, or grow a fingernail back.
