- Immunology. any substance that can stimulate the production of and combine specifically with them.
- Pharmacology. any commercial substance that, when injected or absorbed into animal tissues, stimulates the production of .
- antigens of a particular type collectively.
- a substance that stimulates the production of antibodies
“substance that causes production of an antibody,” 1908, from German Antigen, from French antigène (1899), from anti- (see ) + Greek -gen (see ).
- Any of various substances, including toxins, bacteria, and the cells of transplanted organs, that when introduced into the body stimulate the production of antibodies.allergen immunogen
- A substance that stimulates the production of an antibody when introduced into the body. Antigens include toxins, bacteria, viruses, and other foreign substances. Compare antibody. See Note at blood type.
Substances that are foreign to the body and cause the production of. , invading and , and the of transplanted can all function as antigens.