Množina: antigens

substance causing production of antibodies.
Any substance that causes the production of antibodies by the body's immune system. Common antigens include the proteins carried on the surface of bacteria, viruses, and pollen grains. The proteins of incompatible blood groups or tissues also act as antigens, which has to be taken into account in medical procedures such as blood transfusions and organ transplants.
Any substance (as a toxin or enzyme) that stimulates the production of antibodies.

Of or relating to antigens.

Množina: antigenicities

Production of antibodies