Definition of cross-reaction in English:



  • The reaction of an antibody with an antigen other than the one which gave rise to it.

    ‘Cross reactions occur between retroviral glycoproteins and lymphocyte surface receptors.’
    • ‘Participants with a history of adverse reactions to peas, beans, or peanuts were excluded because of possible cross reactions to soya protein.’
    • ‘Prions exist in very low concentrations in the body, and the cross reaction with other proteins makes the identification of these prions difficult.’
    • ‘The specificity for food allergen tests is generally low, partly because of cross reactions between some food groups.’
    • ‘What we need to do is identify the proteins in this strain that cause this cross reaction.’



/ˌkrôsrēˈakSH(ə)n/ /ˌkrɔsriˈækʃ(ə)n/