alloantigen
/ˌæloʊˈæntɪdʒən/
noun
- A substance from one individual that triggers an immune response in another individual of the same species.
- Blood type markers are alloantigens that can cause reactions during transfusions.
- The doctor explained that the donor's alloantigen was different from the patient's, so the body might reject the transplant.
- Scientists study alloantigens to improve the safety of organ transplants.