Quite the contrary: these are wonderful spaces to be in, and Kahn's system does not fight art at all.

Immunotherapy is a treatment that uses the patient's immune system to fight cancer.

Despite some recent progress, he said, the system was still fighting overwhelming odds.

My immune system was fighting it, but I think they've come to a compromise.

No matter how long their systems fight it, in the end the germ will win.

When people are ill, their body's immune system fights the disease, and so the body temperature rises.

The antibody stimulates the body's immune system to fight the cancer.

A weak immune system cannot effectively fight developing infections and illnesses.

But even the cancer-causing types are harmless in most people because their immune systems fight them off.