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Definition: Substances that are recognized by the immune system and induce an immune reaction.

Pronunciation: an´tĭ-jen

Body System: Lymphatic

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ICD10 Codes Containing Term: antigen

D84.0 Lymphocyte function antigen-1 [LFA-1] defect
R76.12 Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis
R97.0 Elevated carcinoembryonic antigen [CEA]
R97.1 Elevated cancer antigen 125 [CA 125]
R97.20 Elevated prostate specific antigen [PSA]
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