They also may use immunotherapy -- getting the body's immune system to fight the cancer.

VOA: special.2010.07.06

Autoimmune diseases affect the immune system C the body's natural defenses for fighting disease.

VOA: special.2009.04.14

Autoimmune diseases affect the immune system, the body's natural defenses for fighting disease.

VOA: special.2010.06.15

Those diseases affect the immune system the body's natural resistance to disease.

VOA: special.2009.11.24

The immune system is supposed to protect the body.

VOA: special.2010.11.16

The institute has scoured the results of international studies to find antigens substances that provoke an immune response in the body that could be a potent weapon against malaria.

VOA: standard.2010.01.20