Recent Examples of antigen from the Web
Hundreds of distinctive little fragments of protein — called antigens — are expressed on their surfaces, and many of those fragments look just like some of the surface proteins expressed by cancer cells.
Additionally, Obama’s physical noted the president’s levels of prostate specific antigen, which is a marker for prostate cancer.
Screening for prostate cancer consists of two simple tests — a digital rectal exam and a prostate specific antigen (PSA) blood test.
The lung disease was caused by an immune response to an unknown antigen.
Now the antigen-independent chip can detect cells from virtually any kind of cancer.
These antigens are hemagglutinin (Ha or H) and Neuraminidase (NA or N).
Then the cells are infused back into the patient to turn the immune system against the antigen.
Brooks urged men to have regular tests for the antigen that can signal prostate problems.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antigen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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
medical Definition of antigen
Seen and Heard
What made you want to look up antigen? Please tell us where you read or heard it (including the quote, if possible).