antigen

n [U] (medical 医) substance which, when it is put into the body, causes it to produce antibodies 抗原（进入机体後能诱发机体产生抗体的物质）.

anti-Semite, anti-Semitic, anti-Semitism, anti-tank, anti-tank missiles, anti-trust, anti-war, antiballistic missile, antibiotic, antibody, antic, anticipate, anticipation, anticipatory, anticlimactic, anticlimax, anticlockwise, anticyclone, antidote, antifreeze, antihistamine, antilogarithm, antipathy, antiperspirant, antipodes, antiquarian, antiquary, antiquate, antiquated, antique, antique furniture, antiquity, antirrhinum, antiseptic, antisocial, antithesis, antithetic, antithetical, antithetically, antitoxic,