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antigen

(an-ti-jen)

Something the immune system can recognise as 'foreign' and attack.		  

abscess  anabolic  antenatal  antiretroviral  ataxia
acute  anaemia  antibiotic  antiviral  atherogenic
adherence  anal intraepithelial neoplasia (AIN)  antibody  arthralgia  atherosclerosis
adverse event  anergy  anticoagulants  arthritis  atrophy
AIDS  anorexia  antigen  assay  autonomic nervous system
amylase  anoscopy  antioxidant  asymptomatic