Antigen

Antigenic drift: A mechanism for variation by viruses that involves the accumulation of mutations within the antibody-binding sites so that the resulting viruses cannot be inhibited well by antibodies against previous strains making it easier for ...
Full article >>>

ANTIGEN - A foreign substance, bacteria, or virus that can stimulate the production of antibodies.
[ Med Help International ] [ Search ] [ Ask the Doctor Forums ]
The medical glossary has been made possible by a generous donation from: ...
Full article >>>

The antigen tests are used if the person has a medical history and symptoms that suggest giardiasis. They may be done to check that the person has been cured after treatment and may also be used as a screening test.
(back to top)
Results ...
Full article >>>

Antigen-processing cell (APC)
Antigen-presenting cell, Accessory Cells
T lymphocytes are part of the immune system involved in identifying antigens .
Full article >>>

Antigens
Definition:
An antigen is any substance that causes your immune system to produce antibodies against it.
Full article >>>

HLA antigens are the major determinants used by the body's immune system for recognition and differentiation of self from non-self (foreign substances).
Full article >>>

Prostate-specific antigen (PSA) is a protein produced by the cells of the prostate gland. The PSA test measures the level of PSA in the blood. The doctor takes a blood sample, and the amount of PSA is measured in a laboratory.
Full article >>>

Alternate Names
: Plasma Factor VIII Antigen
How will the Test Feel?
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.
Full article >>>

Antigen leukocyte cellular antibody test (ALCAT). The practitioner draws samples of your blood and exposes them to 150 to 200 different extracts of foods, drugs, chemicals, pollen, mold and animal dander.
Full article >>>

AntigenThe chemical that stimulates an immune response.
AnemiaReduced oxygen-carrying capacity of the blood, due to too little hemoglobin or too few red blood cells.
Collagen-vascular diseaseVarious diseases inflaming and destroying connective tissue.
Full article >>>

Antigen
Any substance (such as a toxin or enzyme) capable of stimulating an immune response in the body.
Ataxia ...
Full article >>>

antigen
A foreign agent capable of starting an immune response or causing the body to produce antibodies.
antiserum ...
Full article >>>

ANTIGEN: Any substance that antagonizes or stimulates the immune system to produce antibodies (ie, proteins that fight antigens). Antigens are often foreign substances such as bacteria or viruses.
Full article >>>

CD34 antigen
A protein found on the surface of some bone marrow and blood cells.
CD40-ligand ...
Full article >>>

HEPATITIS Be ANTIGEN (HBeAg) - Laboratory test that helps to determine degree of activity, or rate of multiplication, of hepatitis B virus.
Full article >>>

Cross-matching antigens. The last test before implanting an organ is the cross-match. A small sample of your blood will be mixed with a sample of the organ donor's blood in a tube to see if there's a reaction.
Full article >>>

Prostate-Specific Antigen Blood Test (PSA Test)
What Is It?
What It's Used For
Preparation
How It's Done ...
Full article >>>

Legionella urinary antigen (LUA) ELISA test/kit Urine test indicated for diagnosis of past or current Legionnaires' disease by detection of Legionella pneumophila serogroup antigen. Mfg: Intracel/Bartels division. Source: PR Newswire - 10/25/2000.
Full article >>>

ectatic; ectatic aneurysm; ectatic emphysema; ectatic marginal degeneration of cornea; ectental; ecteron; ectethmoid; ecthoreum; ecthyma; ecthyma, contagious; ecthyma gangrenosum; ecthymatiform; ecthymatous syphilid; ectiris; ecto-; ectoantigen; ...
Full article >>>

The nature of late eczematous reactions to pollen related food antigens has not been investigated in detail.
Full article >>>

In systemic lupus erythematosus it has been shown that individuals have antibodies to certain of their own body substances that for some reason are acting as antigens; ...
Full article >>>

Lymph nodes are concentrations of lymphatic tissue with T cells, B cells and macrophages which recognize antigens and mount a response. When a lymph node responds, it undergoes a hyperplasia with an increase in the numbers of cells.
Full article >>>

Hepatitis A infection: A positive antigen test (called an HAV or hepatitis A virus test) and a positive antibody test (called an IgM anti-HAV antibody test) mean you currently have an acute hepatitis A infection.
Full article >>>

Our lab is engaged in the study of molecular and cellular immunology of infectious diseases, with particular interests in pathophysiology and protective antigens for vaccines.
Full article >>>

A group of genes on chromosome 6 code for HLA antigens play a major role in susceptibility and resistance to disease. Specific HLA antigens influence the development of many common disorders.
Full article >>>

In an allergy, a substance perceived as a threat (usually a specific antigen found in a particular food) binds to the IgE type of antibody (a protein produced by the white blood cells). IgE in turn binds to cells called mast cells.
Full article >>>

There's also a test called a PSA test, that stands for prostate specific antigen, which is a blood test. And in general, a high level of PSA will indicate the potential for there to be cancer present.
Full article >>>

CEA (Carcinoembryonic antigen) A blood tumor marker. Cellulitis The inflammation of an area of the skin (epithelial layer).
Full article >>>

The treatment of hay fever consists of removing the environmental antigen, if possible, and implementing drug therapy and immunotherapy (allergy shots).
Full article >>>

In the early 20th century, two types of antigen, A and B, were discovered. The combination of these types produces four blood groups: type A, type B, type AB (both antigens) and type O (neither A nor B antigen).
Full article >>>

Another tool for identifying those with prostate cancer is a blood test called prostate specific antigen or PSA. This test is also not perfect in that PSA blood levels can be abnormally elevated by several non-cancerous conditions.
Full article >>>

" When the body senses a foreign substance, called an antigen, the immune system is triggered. The immune system normally protects the body from harmful agents such as bacteria and toxins.
Full article >>>

Hypersensitivity - Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen.
Full article >>>

If possible, stop exposure to the causative medication (or other antigen). Aspirin or corticosteroids may be prescribed to reduce inflammation of the blood vessels.
Full article >>>

One of the most worrying features of the viruses which cause flu is the way that they are continually changing over time, through small changes in their make-up called antigenic drift and occasional abrupt major changes called antigenic shift.
Full article >>>

All of the plasma cells descended from a single B cell produce the same antibody which is directed against the antigen that stimulated it to mature. The same principle holds with memory B cells.
Full article >>>

Carcinoembryonic antigen (CEA)
Increased tendency of chromosomes to break on exposure to radiation
Genetic testing for mutations in the ATM gene.
X-rays showing underdeveloped, small thymus in childhood
Abnormal glucose tolerance test ...
Full article >>>

The most common methods for diagnosing influenza include antigen detection tests which are done on nose and throat (nasopharyngeal) secretions by swabbing these areas with a dacron swab and then sending a sample to the laboratory for testing.
Full article >>>

A careful, but relatively simple, rectal examination can reveal if cancer is developing in this organ. There are also other screening methods, and PSA (prostate-specific antigen) appears to be the best.
Full article >>>

People with acute tinea infections can develop similar symptoms on their hands, typically on the palms. This reaction, also known as tineas manuum, is an immune system response to fungal antigens (i.e., antibodies that fight the fungal infection).
Full article >>>


'"/>