Though the precise immunologic mechanism
of cow's milk protein allergy is not completely understood, it is thought to be due to immaturity of both the gastrointestinal tract and the immune system (Sampson, 1997).
The proposed immunologic mechanism
for the development of human diabetes after infant exposure to nonpharmacological amounts of bovine insulin could be extended to bovine growth hormone.
Anaphylaxis is caused by an immunologic mechanism
which involves an IgE antibody that attaches to a mast cell or basophil and reacts with a certain allergen.
The immunopathogenesis of food allergies may be governed by more than one immunologic mechanism
, including immediate manifestations mediated by IgE; inflammatory reactions caused by immune complexes, lectins, and superantigens; and delayed hypersensitivity reactions associated with specific T lymphocytes (Helm and Burks 2000).