In 1916, Cooke and Albert Vandeveer demonstrated the role of
heredity in the origins of
allergy. According to Cooke, 48% of his allergic patients had allergies in their
family history. While the trait of allergy is transmitted through heredity, parents and children may be allergic to different substances. In 1918, Cooke suggested a mechanism of action for allergen injections as a "
desensitization or hyposensitization," analogous to tolerance achieved in experimental
anaphylaxis induced in animals. == Legacy ==