Antigenic shift is the process by which two different strains of influenza combine to form a new subtype having a mixture of the surface antigens of the two original strains.
Antigenic shift is the process by which at least two different strains of a virus, especially influenza, combine to form a new subtype having a mixture of the surface antigens of the two original strains. The term antigenic...
Full article ...
Antigen Receptor Diversity
The human genome is presently estimated to contain 20-25 thousand genes. The number of T-cell receptors for antigen (TCRs) that we make is estimated at 2.
antigen
a substance causing the formation of an antibody
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Any of many antigens that are part of a bacterial capsule or form on the outer portion of a cell wall.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
The adaptive immune response depends on the creation of suitable peptides from foreign antigens for display on MHC molecules to T lymphocytes.
Antigenic variation
A change in the types or amounts of a molecule on the cell surface of a pathogen that alters recognition by the host immune system.
Antigen Processing
When the macrophage eats bacteria, proteins (antigens) from the bacteria are broken down into short peptide chains and those peptides are then "displayed" on the macrophage surface attached to special molecules called MHC II ...
Antigen. Any foreign substance, such as a virus, bacterium, or protein, that elicits an immune response by stimulating the production of antibodies. (See Antigenic determinant, antigenic switching.) ...
Antigens substances on the surfaces "foreign" cells that our immune systems use to distinguish "me" from a foreign invader
(from "antibody generating"; anti = against‚ opposite; gen = bear‚ produce) ...
Antigen: Any macromolecule that triggers an immune response. Antigenicity depends on the ability of the peptide fragments to be presented by the MHC molecules.
antigenic determinant The site on an antigen to which an antibody binds, forming an antigen-antibody complex.
antigen
(an-teh-jen) [Gk. anti, against + genos, origin, descent]
A foreign macromolecule that does not belong to the host organism and that elicits an immune response.
aorta ...
Antigen A foreign substance that elicits the synthesis of an antibody.
Antigenic determinant Site on an antigen to which an antibody binds. Also called an epitope.
Antigenic Shift
The influenza virus can mutate through antigenic shift, causing new outbreaks to occur in human populations.
View QuickTime Movie ...
Antigen
A substance that the body regards as foreign, to which it produces an immune response, very often by secretion of antibodies ...
Antigen to HIV only
Presence of free, circulating virus in the patient
Presence of virus in infected lymphocytes only ...
antigen detection
activation of helper T cells
antibody production by B cells
Each stage is directed by a specific cell type.
antigen - a molecule which reacts with preformed antibody at the specific receptors on T and B cells. Antigens are the ligands that react with the products of an immune response ...
antigen challenge Dose or inoculation with an antigen given to an animal some time after primary immunization with that antigen has been achieved.
Mutations in the antigenic structure of the influenza virus have resulted in a number of different influenza subtypes and strains.
An immunoglobulin protein produced by B- lymphocytes of the immune system that binds to a specific antigen molecule. (See monoclonal antibodies, polyclonal antibodies.) Anticodon.
Rhogam is prepared from the gamma globulin fraction of blood of Rh- people who have been exposed to the Rh+ antigen and who have made antibodies to it. The Rhogam acts as a passive immunization.
In 1032 employees (446 men and 586 women; 22 to 66 years old) of a hospital in southern Italy, we investigated the association between PAI-1 4G/5G and the ACE I/D gene variants and plasma PAI-1 antigen levels.
Antigen-presenting cell surface proteins have been the focus of investigation into possible genetic susceptibility to this disease. It was discovered previously that certain HLA-DPß1 alleles correlated with the development of CBD.
EPITOPE - As related to protein antigens, B-cell epitopes consist of the amino acid residues of a protein molecule which interact directly through noncovalent bonds with the amino acid residues of a particular antibody molecule (complementarity ...
(Science: immunology) a thermodynamic expression of the strength of interaction between a single antigen binding Site and a single antigenic determinant (and thus of the stereochemical compatibility between them), ...
consists of two light chains and two heavy chains, and at the very tip of the antibody is a hypervariable region, and this hypervariable region allows the antibody to make different types of antibodies that will respond to all of the antigens that ...
histocompatibility antigens - cell surface glycoproteins that differ from individual to individual; their recognition as foreign by a host organism is responsible for rejection of grafted foreign tissue.
membrane proteins (receptors, membrane transport, antigens)
structural
toxins (botulism, diphtheria) ...
The situation in which a heterozygote shows the phenotypic effects of both alleles fully & equally, (eg blood group antigens).
Was this definition helpful?
Would you have liked more information?
 See also: Cells, Protein, Trans, Human, Cell
|
