cross-reaction

[ kraws-ree-ak-shuhn-kros- ]

noun

1. an immunologic reaction between a given antigen and an antibody or lymphokine that is specific for a different antigen resembling the first one.

Other Words From

• cross-re·active adjective
• cross-re·ac·tivi·ty noun

Word History and Origins

Origin of cross-reaction¹

First recorded in 1945–50

Example Sentences

This case of mistaken identity, at the molecular level, is known scientifically as a cross-reaction.

From BBC

Eating those foods can trigger a “cross-reaction,” making allergy symptoms worse, but more often they cause oral-allergy syndrome, also known as pollen-food syndrome: itchy mouth, scratchy throat, swelling of the lips, mouth and throat.

From Seattle Times

A drug your doctor prescribes could be perfectly safe and effective, but if you are taking a similar-acting supplement, there is a real danger of cross-reaction.

From Time Magazine Archive