The infections can also be a problem for organ transplant recipients, who must take immune-suppressing drugs to keep from rejecting the organs.

Four years later, as a consequence of the immune-suppressing drugs, he developed lymphoma, a cancer of the immune system.

But cyclosporine, as well as steroids and other immune-suppressing drugs, has severe side effects.

The patients were given immune-suppressing drugs to prevent that attack.

Nor should organ transplant recipients or cancer patients, who take immune-suppressing drugs.

This rate is comparable to other immune-suppressing drugs.

The patients must take strong immune-suppressing drugs for the rest of their lives, and these may cause cancer or be toxic to the heart, doctors say.

And compared with some older immune-suppressing drugs, they appear safer, because they are precisely aimed at central elements of the inflammation process.

Because the transplanted cells come from someone else, recipients must take immune-suppressing drugs for life to prevent rejection.

A quarter of the patients had to switch immune-suppressing drugs because of side effects, which sometimes included a drop in kidney function.