This blood vessel is rich in oxygen.

Only a single cell can pass through this blood vessel.

The body's defense against pathogens.

The one that delivers oxygen around your body.

It picks up oxygen into the lungs.

Oxygen combines with the haemoglobin inside which organ?

What is the shape of a sickled cell?

Sickle cell anemia can be inherited.

Sickle cell anemia is contagious.