antigen definition example
B lymphocytes remain immature until an antigen binds to it's surface making it a B-cell. The B-cell then creates a large number or clones. Most turn to plasma cells, but a few become long-lived memory cells. 1 A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs.  n. A substance that induces an immune response, usually foreign. The definition of antigen is a harmful substance which enters the body which causes the body to make antibodies as a response to fight off disease. An example of an antigen is a common cold virus which causes the body to make antibodies which help prevent the person from getting sick. from The American Heritage® Dictionary of the English Language, 4th Edition. n. A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs. Everything, except water and common elements can become an antigen to someone. There has even been a violent reaction to latex gloves at a dental office, in which the patient became unconscious, went into anaphylactic shock, and would have died without oxygen assistance. 1 Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs. 2  n. A substance that induces an immune response, usually foreign.  n. any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies) After the war the victorious allies were more concerned with preventing Germany from becoming powerful enough to launch a war of aggression (and yes - I think we can agree they all failed spectacularly at that). A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs. Related Forms: an′ti·gen′ic. The H antigen is an intermediate stage in the production of the A and B antigens. Boon's group, and others, have determined that sometimes more than one antigen is associated with a gene: peptides in the MAGE-3 gene associate with at least two different MHC molecules, A-1 and A-2. From Wikipedia, the free encyclopedia. An epitope, also known as antigenic determinant, is the part of an antigen that is recognized by the immune system, specifically by antibodies, B cells, or T cells. For example, the epitope is the specific piece of the antigen to which an antibody binds. The part of an antibody that binds to the epitope is called a paratope.
It is a harmful substance which enters the body which causes the body to make antibodies as a response to fight off disease.An example of an antigen is a common cold virus.