The immune system actually attacks infected cells rather than the virus, he explained.

The new stem cells attack other cells in your body.

The second was a "cell mediated" immune response, which allows the body to attack infected cells.

Scientists reported yesterday that for the first time they had completely analyzed the site at which cold viruses attack human cells.

He noted there was no sign that Onyx-015 attacked normal cells in the living body.

Now there are millions of new viral particles that can go out and attack new cells.

It spreads through the body very quickly, attacking cells and destroying organs.

Free radicals are molecules in the body that attack healthy cells and cause damage that can lead to disease.

But then - perhaps right away, often much later - their immune systems begin to attack various cells and tissues in their bodies.

This new medicine is supposed to attack diseased cells, and destroy them.