An antigen is any substance, often part of a virus or bacterium, that your immune system recognizes as foreign and reacts against. Antigens trigger the production of antibodies.
From 'anti-' (against) + '-gen' from Greek 'gennan' meaning 'to produce', meaning 'antibody-generating'. The term was coined in early immunology research.
Antigens are like ID badges that your immune system scans: 'friend' or 'foe?'. Vaccines often show your body harmless antigens so it learns the 'faces' of threats before a real attack.
Like other immunology terms, antigen research has sometimes overlooked sex-based differences in immune response, affecting how diseases and vaccines are understood across genders.
Use “antigen” neutrally and mention when immune responses differ across populations without essentializing by gender.
["immune-triggering substance","target molecule for antibodies"]
Women researchers have played major roles in antigen discovery and vaccine design, even when recognition lagged.
Complete word intelligence in one call. Free tier — 50 lookups/day.