Recent Examples of antigen from the Web
In the 1930s, archaeologists attempted (with little success) to determine the blood types of mummies by identifying proteins with immunoassays, which test for antibody-antigen reactions.
Most years that approach works reasonably well, but sometimes the antigen doesn't match the strain circulating.
Men who proceed with screening may be given a prostate-specific antigen (PSA) blood test (which can indicate an abnormal cell count in the prostate gland) and/or a digital rectal exam.
The method characterizes a region of the genome called human leukocyte antigen, or HLA, that regulates the immune system.
One such avenue is chimeric antigen receptor therapy or CAR T-cell therapy.
For many leukemias and lymphomas, that’s an antigen named CD19.
The goal: Arm T cells with an artificial receptor, a tracking system that can zero in on identifying markers of cancer cells, known as antigens.
Perlin ordered an antigen test, which is used to diagnose cancer, on a patient 30 times between 2006 and 2011 without referring the patient to an oncologist or discussing the results with the patient, the order said.
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Did You Know?
An antibody is a protein produced by your immune system to fight outside invaders. Since the enemy substance actually triggers the production of antibodies, such substances are called antigens—anti- being short for antibody, and -gen meaning "producer". (In a similar way, an allergen produces an allergy, and a pathogen produces a pathology or disease.) Antigens are often rodlike structures that stick out from the surface of an invading organism—usually a bacterium or a virus—and allow it to attach itself to cells in the invaded body. But unfortunately for them, in doing so they let the immune system know they're present, and the body is flooded with an army of Pac-Man-like antibodies.
Origin and Etymology of antigen
First Known Use: 1908See Words from the same year
ANTIGEN Defined for English Language Learners
Definition of antigen for English Language Learners
medical : a harmful substance that causes the body to produce antibodies
medical Definition of antigen
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