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    Privacy˙Terms˙
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    antigen

    US /ˈæntɪdʒən/

    ・

    UK /ˈæntɪdʒən/

    B2
    n.NounSubstance that produces antibodies in the body
    Scientists are looking for an antigen to help us fight illnesses naturally

    Video subtitles

    The Immune System

    13:47The Immune System
    • is called antigen. And so basically what a macrophage will do is it will notice that

      is called antigen. And so basically what a macrophage will do is it will notice that

    • response is more like the spies. And so basically here's an antigen again. An antigen is going

      response is more like the spies. And so basically here's an antigen again. An antigen is going

    B1

    Every Hidden Advantage of Your Blood Type Explained

    10:05Every Hidden Advantage of Your Blood Type Explained
    • On the other hand, the exposed H antigen on O blood cells can be a point of entry for certain pathogens, which is why O individuals are more vulnerable to severe cases of cholera and norovirus.

      On the other hand, the exposed H antigen on O blood cells can be a point of entry for certain pathogens, which is why O individuals are more vulnerable to severe cases of cholera and norovirus.

    • On the other hand, the exposed H antigen on O blood cells can be a point of entry for certain pathogens, which is why O individuals are more vulnerable to severe cases of cholera and norovirus.

      On the other hand, the exposed H antigen on O blood cells can be a point of entry for certain pathogens, which is why O individuals are more vulnerable to severe cases of cholera and norovirus.

    B2

    Blood, Part 1 - True Blood: Crash Course A&P #29

    10:00Blood, Part 1 - True Blood: Crash Course A&P #29
    • So if you don't have a particular antigen on your blood cells, say the type B, then you do have antibodies that are going to label those B antigens for attack, should they enter your space.

      So if you don't have a particular antigen on your blood cells, say the type B, then you do have antibodies that are going to label those B antigens for attack, should they enter your space.

    • So if you don’t have a particular antigen on your blood cells -- say the type B -- then

      So if you don’t have a particular antigen on your blood cells -- say the type B -- then

    B2

    What are Blood Types?

    03:05What are Blood Types?
    • On the flip side, you do have antibodies that would attack the type of antigen that you don't have.

      On the flip side, you do have antibodies that would attack the type of antigen that you don't have.

    • On the flip side, you DO have antibodies that would attack the type of antigen that you

      On the flip side, you DO have antibodies that would attack the type of antigen that you

    B1

    3 Reasons Mosquitoes Suck

    04:033 Reasons Mosquitoes Suck
    • We each have a blood type determined by a chemical marker called an antigen that forms on our red blood cells.

      We each have a blood type determined by a chemical marker called an antigen that forms on our red blood cells.

    • blood type determined by a chemical marker, called an antigen, that forms on our red blood

      blood type determined by a chemical marker, called an antigen, that forms on our red blood

    B1

    Your Immune System: Natural Born Killer - Crash Course Biology #32

    15:02Your Immune System: Natural Born Killer - Crash Course Biology #32
    • An antigen is anything that causes your immune system to idea a pathogen and then create an antibody against it.

      An antigen is anything that causes your immune system to idea a pathogen and then create an antibody against it.

    • After the deed has been done, it has the ability to shred up the proteins from an invader and put a bit of that antigen on its membrane surface.

      After the deed has been done, it has the ability to shred up the proteins from an invader and put a bit of that antigen on its membrane surface.

    B2

    NEJM This Week — January 8, 2026

    25:11NEJM This Week — January 8, 2026
    • Limitations of this therapy included CD7 antigen loss and risks of viral related complications.

      Limitations of this therapy included CD7 antigen loss and risks of viral related complications.

    • Limitations of this therapy included CD7 antigen loss and risks of viral-related complications.

      Limitations of this therapy included CD7 antigen loss and risks of viral-related complications.

    B2

    Why You Shouldn’t Fight A Fever

    03:51Why You Shouldn’t Fight A Fever
    • In the study, researchers injected mice with an antigen and then monitored the activation of a type of lymphocyte called CD8+ cytotoxic T cells, which are capable of killing cells infected with viruses and even cancer cells.

      In the study, researchers injected mice with an antigen and then monitored the activation of a type of lymphocyte called CD8+ cytotoxic T cells, which are capable of killing cells infected with viruses and even cancer cells.

    B1

    Why children get so many vaccines

    08:43Why children get so many vaccines
    • The most obvious one is the antigen itself, the thing that prompts your body to launch an immune response.

      The most obvious one is the antigen itself, the thing that prompts your body to launch an immune response.

    B2

    Dogs Show They Can Detect A Virus | May 26, 2021

    10:01Dogs Show They Can Detect A Virus | May 26, 2021
    • When it comes to medical tests that diagnose COVID, there are two main options: the antigen or rapid test and the polymerase test.

      When it comes to medical tests that diagnose COVID, there are two main options: the antigen or rapid test and the polymerase test.

    B1