1. any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)Source or sample of word "antigen"
2. (antigenic) of or relating to antigensSource or sample of word "antigen"
3. An antigen is a molecule recognized by the immune system. Originally the term came from antibody generator and was a molecule that binds specifically to an antibody, but the term now also refers to any molecule or molecular fragment that can be bound by a major histocompatibility complex (MHC) ...Source or sample of word "antigen"
4. The ABO blood group system is the most important blood type system (or blood group system) in human blood transfusion. ...Source or sample of word "antigen"
5. A substance that induces an immune response, usually foreignSource or sample of word "antigen"
6. Antigens are molecules that stimulate an immune system response. Bacteria, viruses, and other microorganisms are types of antigens.Source or sample of word "antigen"
7. Antigens are substances that cause a person’s immune system to react, either mildly or severely. A person’s system will detects antigens as foreign matter and try to eliminate them through the production of antibodies (which help neutralize antigens). ...Source or sample of word "antigen"
8. (antigens) Molecules carried or produced by microorganisms that initiate antibody production; mostly proteins or proteins combined with polysaccharides.Source or sample of word "antigen"
9. (Antigens) Foreign macromolecules—normally proteins, carbohydrates, or nucleic acids—that trigger the immune response.^ 3Source or sample of word "antigen"
10. (Antigens) Specific structures on the cell surface of bacteria, viruses or fungi. If the body is attacked by such pathogens, the plasma cells developed from the B-lymphocytes form antibodies.Source or sample of word "antigen"
11. (Antigens) a substance that the body recognizes as 'nonself' or 'foreign' and against which a specific immune response is mounted. Antibodies have a complementary chemical structure to a portion of an antigen and bind to the antigen, analogous to the manner in which a key fits into a lock.Source or sample of word "antigen"
12. (Antigens) any molecule that our immune system will mount a specific response against. Each antigen may have multiple locations, or epitopes, where antibodies actually bind. Antigens can be proteins, lipids (fats), carbohydrates, glycoproteins or lipoproteins.Source or sample of word "antigen"
13. (Antigens) proteins that are located on the surface of all cells, which help our Immune System identify invading organisms and abnormal or cancerous cells from normal healthy.Source or sample of word "antigen"
14. A substance on the surface of red Blood cells that elicits an immune response when transfused into a patient who lacks that antigen.Source or sample of word "antigen"
15. Any substance that when introduced into the body (such as the protein coat of an invading pathogen) causes the formation of antibodies. Ag is also found on tissue and blood cells, and in body fluids. Measurement of antigen can help determine whether a particular disease will become active.Source or sample of word "antigen"
16. Any foreign material that is specifically bound by specific antibody or specific lymphocytes; also used loosely to describe materials used for immunization. Antigens may also be immunogens if they are able to trigger an immune response, or haptens if not.Source or sample of word "antigen"
17. An antigen is any substance that the body identifies as potentially dangerous and against which it produces a defence (an antibody).Source or sample of word "antigen"
18. a protein produced by the immune system in response to an infection or other stimulation (i.e. allergies, etc).Source or sample of word "antigen"
19. A substance that reacts with antibodies or memory T cells to give rise to an immune reaction. An antigen that binds with a specific antibody or T cell can give rise to allergy.Source or sample of word "antigen"
20. A structure foreign to the body, such as a virus. The body usually responds to antigens by producing antibodies.Source or sample of word "antigen"
21. Component of a foreign biological substance (transplanted tissue, invading virus, etc.), which stimulates the host's immune system to attack that foreign substance by elaborating an antibody (q.v.) that destroys the antigen and, in so doing, usually results in damage to the "invader"Source or sample of word "antigen"
22. A substance that, when introduced into the body, stimulates the production of an antibody.Source or sample of word "antigen"
23. A substance capable of stimulating an immune response by triggering the production of antibodies.Source or sample of word "antigen"
24. A chemical substance that induces an immune responsiveness after a latent period (days to weeks). For example, there is a protein antigen on the surface of the influenza virus called hemagglutinin which induces protective antibody to be made after infection or vaccination.Source or sample of word "antigen"
25. An antigen is the part of a ger (bacteria or virus) that the body's immune system can recognize and attack t prevent the germ from causing disease. ...Source or sample of word "antigen"