| MAD | Major Antigenic Determinant |
|---|---|
| AD | accident dispensary; acetate dialysis; active disease; acute dermatomyositis; addict, addiction; ade... |
| NAD | neutrophil actin dysfunction; new antigenic determinant; nicotinamide adenine dinucleotide; nicotini... |
| MAP | Multiple Antigenic Peptide |
|---|---|
| VAT | variant antigenic type |
| antigenic | Having the properties of an antigen (allergen). Synonym: allergenic, immunogenic. (05 Mar 2000) |
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| antigenic competition | Competition that occurs when two different antigens, each of which can evoke an immunological response when inoculated alone, are mixed in equal quantities and inoculated together; the response may be to only one, that to the other being largely or entirely suppressed. (05 Mar 2000) |
| antigenic complex | A composite of different antigenic structures, such as a cell or a bacterium, or, by extension, a molecule containing two or more determinant groups of different antigenic specificities. (05 Mar 2000) |
| antigenic determinant | That part of an antigenic molecule against which a particular immune response is directed. For instance a tetra to penta peptide sequence in a protein, a tri to penta glycoside sequence in a polysaccharide. In the animal most antigens will present several or even many antigenic determinants simultaneously. See: hapten. (18 Nov 1997) |
| antigenic drift | <immunology> A change that occurs on the molecular level to effect a change in the antigenicity of a bacteria or virus. Antigenic drift occurs naturally and more rapidly in certain viruses (for example HIV). It is antigenic drift which complicates the development of an effective HIV (AIDS) vaccine. (27 Sep 1997) |
| antigenic modulation | Loss of detectable antigen from the surface of a cell after incubation with antibodies. This is one method in which some tumours escape detection by the immune system. Antigenic modulation of target antigens also reduces the therapeutic effectiveness of treatment by monoclonal antibodies. (12 Dec 1998) |
| antigenic shift | Mutation, i.e., sudden change in molecular structure of RNA/DNA in microorganisms, especially viruses, which produces new strains of the microorganism; hosts previously exposed to other strains have little or no acquired immunity to the new strain; antigenic shift is believed to be the explanation for the occurrence of strains of microorganisms, such as the influenza virus, associated with large scale epidemics. (05 Mar 2000) |
| antigenic switching | <immunology> The process by which a pathogenic microbe's genetic structure is altered tochange its surface antigens inorder to avoid being detected by the host's immune system. (09 Oct 1997) |
| antigenic variation | The phenomenon of changes in surface antigens in parasitic populations of Trypanosoma and Plasmodium (and some other parasitic protozoa) in order to escape immunological defense mechanisms. at least 100 different surface proteins have been found to appear and disappear during antigenic variation in a clone of trypanosomes. Each antigen is encoded in a separate gene. Antigenic variation is also known to occur in free living Protozoa and certain bacteria. (18 Nov 1997) |
| antigenicity | <immunology> The ability of a substance to trigger an immune response in a particularorganism. (09 Oct 1997) |
| idiotypic antigenic determinant | The antigenic specificites defined by the unique sequences (idiotopes) of the antigen combining site. Thus anti-idiotype antibodies combine with those specific sequences, may block immunological reactions and may resemble the epitope to which the first antibody reacts. (18 Nov 1997) |
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Synonyms : Antigenic Modulations, Modulation, Antigenic, Modulations, Antigenic
Synonyms : Antigen Variation, Antigenic Switching, Antigenic Variability, Switching, Antigenic, Diversity, Antigenic, Switching, Antigen, Variability, Antigenic, Variation, Antigen
| antigenic |
of or relating to antigens
Ãâó: wordnet.princeton.edu/perl/webwn
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| antigenic determinant |
the site on the surface of an antigen molecule to which an antibody attaches itself
Ãâó: wordnet.princeton.edu/perl/webwn
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| antigenic drift |
Antigenic drift refers to mutations in the influenza virus that cause changes in the virus's surface proteins over time. Those proteins (hemagglutinin and neuraminidase) are the causes of the body's immune reaction (i.e., they are antigens). Mutations occur almost yearly in the influenza virus, and while the change might not be a major one (which would then be called an antigenic shift), they are sufficient to lessen your body's ability to protect you with antibodies. ...
Ãâó: en.wikipedia.org/wiki/Antigenic_drift
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| antigenic variation |
Some species of disease agent seek to evade the hosts' defence mechanisms by altering their antigenic characteristics. The most extreme case of antigenic variation occurs in trypanosomiasis, where infection in the host usually takes the form of a series of parasitaemias each one of which involves a form of trypanosome antigenically different from the preceding one. This type of antigenic variation occurs during the course of a single infection.
Ãâó: www.fao.org/Wairdocs/ILRI/x5436E/x5436e04.htm
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| antigenic shift |
which involves a major change in antigenicity, so that previously infected individuals possess little or no immunity to the shifted agent.
Ãâó: www.fao.org/Wairdocs/ILRI/x5436E/x5436e04.htm
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| antigenic | of or relating to antigens |
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