noun🔗Share抗原A substance that induces an immune response, usually foreign."The pollen in the air acted as antigens, causing many students to develop allergies. "空気中の花粉は抗原として作用し、多くの学生がアレルギーを発症しました。medicinebiologyphysiologybiochemistryorganismdiseasebodyChat with AIVocabulary GamePractice Reading