Wiktionary
n. All the changes in a tissue that result from the action of a foreign substance introduced into an organism
WordNet
n. a bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigen [syn: immune response, immunologic response]
Usage examples of "immune reaction".
According to the blood samples we took, every immune reaction in their bodies had been stimulated and they were simply burning up, even though they were shivering themselves to death.
Mottled yellow in the skin - most probably an immune reaction to pantothenic acid and a failure of adrenalin suppression.
As soon as the threshold of the immune reaction can be lowered without the body's own defences against infection being endangered, transplants should take place as a matter of course, just like operations for appendicitis.
It's possible immune reaction could rid host of parasite, leave host sick with its own antibodies.
She told me about them, and about the series of injections and marrow transplants that they had needed to restore the body's immune reaction without killing the patient.