Some cells do repairs if you get a cut. Red blood cells deliver oxygen and take away rubbish. And your white blood cells are like police looking for germs. There's a lot going on inside you!

It replaces the bone marrow harmed by myeloma cells. Hematopoietic (hee-MA-toh-poy-EH-tik) stem cells (usually just called stem cells) grow into all types of blood cells. The white blood cells fight ...

The complete blood count routine test provides a snapshot of your body's blood production and immunity. The test measures a variety of components in your blood, including red blood cells ...