cell-mediated immune response

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The immune response produced when sensitized T cells directly attack foreign antigens and secrete lymphokines that initiate the body's humoral immune response.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An immune response produced by the lymphokines secreted when sensitized T cells directly attack foreign antigens

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an immune response (chiefly against viral or fungal invasions or transplanted tissue) that involves T cells