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An antigen (from antibody-generating) or immunogen is a molecule that sometimes stimulates an immune response. The word originated from the notion that they can stimulate antibody generation. We now know that the immune system does not consist of only antibodies. The modern definition encompasses all substances that can be recognized by the adaptive immune system.
Antigens are usually proteins or polysaccharides.
any material usually a protein that is recognized as foreign and elicits an immune response.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoAn antigen is any substance that causes your immune system to produce antibodiesagainst it. An antigen may be a foreign substance from the environment such as chemicals, bacteria, viruses, or pollen. An antigen may also be formed within the body, as with bacterial toxins or tissue cells.
Wiki User
∙ 12y agoAn antigen is any substance that causes your immune system to produce antibodiesagainst it. An antigen may be a foreign substance from the environment such as chemicals, bacteria, viruses, or pollen. An antigen may also be formed within the body, as with bacterial toxins or tissue cells.
Reviewed ByReview Date: 08/05/2011
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
Wiki User
∙ 11y agomolecules visible on the surface of a pathogen, cancer cell, pollen grain, etc. that the immune system can recognize as non-self, provoking an immune attack.
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Does Type B blood have A antigens?
No, type B blood does not have A antigens. Type B blood has B antigens.
When was Tissue Antigens created?
Tissue Antigens was created in 1971.
What are antigens determining blood type carried on?
Antigens, by definition, cause the body to produce antibodies which act against them. You inherit certain antigens which are on your red blood cells. Sometimes these antigens are absent from your RBC. If you are type B, you have B antigens. Type A has A antigens, AB has AB antigens and type O has no antigens. If you are type AB, you can receive AB blood from some one else.
What typoes of cells produce antigens?
All cells produce antigens, or cell surface markers. The only question is whether the antigens are self antigens which means they belong in the body or they're foreign antigens which means they are an invading bacteria or virus (or a cancerous cell).
What are some examples of antigens?
Examples of antigens are poisons, splinters and microorganisms.
What types of antigens are recognized by B cells?
Processed fragments of protein antigens displayed on surfaces of body cells.
A person who is B positive will have?
B antigens, antibodies to A, and Rh antigens
What is the medical term meaning blood antigens?
Blood antigens :D
Where are the blood antigens A B Rh located?
The blood antigens A, B, and Rh are located on the membrane of the red blood cell. These antigens are hereditary.
Which antibody and antigen combination match each blood type?
The blood type notation A Rh- indicates which antigens and antibodies are present in the blood. A indicates there are A antigens. Rh+ indicates there are Rh antigens. B antibodies. If there are A and Rh antigens but no B antigens, the antibodies in the blood plasma are B antibodies.
Does anybody know what are the 4 blood types ?
Te four basic blood types are O, A, B and AB. They are named for the types of antigens they carry. O has no antigens, A has A antigens, B has B antigens and AB carries both.
Antibodies are produced when the body is exposed to?
soluble antigens whch entrs our body
