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Antigen
Antigens are chemicals which upon exposure to the surface or inside of the body, will cause a reaction term allergic. Many substances will do this and allergic response is the basis for immunological protection for defense against invading organisms.
Dr. Richard Bensinger reviewed this
54 year experience in Ophthalmology
How long it usually lasts:
Related questions
A 33-year old asked:
What are antigens?
2 doctor answers • 2 doctors weighed in
A 23-year old asked:
Are antigens and t-cells related?
2 doctor answers • 3 doctors weighed in
A 35-year old asked:
Triple antigen prevents which diseases ?
1 doctor answer • 2 doctors weighed in
A 32-year old asked:
What is meant by the australian antigen is positive?
1 doctor answer • 1 doctor weighed in
A 23-year old female asked:
What's the difference between a superantigen and an antigen?
1 doctor answer • 1 doctor weighed in
A 36-year old male asked:
How long does a person test positive on a rapid antigen at home Covid test after having had Covid?
1 doctor answer • 2 doctors weighed in
A 37-year old female asked:
I read that you have millions of B cells. How does one B cell find the right specific antigen it fits to if there's so many of them?
1 doctor answer • 2 doctors weighed in
A 27-year old male asked:
55th day CMIA duo result non reactive (0.08).When do the P24 antigens disappear. How reliable is result @ 55 days PE? Further testing required ?
1 doctor answer • 1 doctor weighed in
A 34-year old male asked:
My wife tested positive for covid last week Friday. I tested negative on rapid antigen test on Saturday. Yesterday started experiencing covid symptoms. ?
2 doctor answers • 3 doctors weighed in
A 38-year old asked:
What are some HIV antigens?
1 doctor answer • 1 doctor weighed in
A 37-year old asked:
In pregnancy, what is an m antigen?
1 doctor answer • 1 doctor weighed in
A 41-year old asked:
Is pencillin a hapten instead of a antigen?
1 doctor answer • 3 doctors weighed in
A 34-year old asked:
What is hepatitis b surface antigen in general?
1 doctor answer • 4 doctors weighed in
A 32-year old asked:
Hepatitis b surface antigen non-reactive means what?
1 doctor answer • 1 doctor weighed in
A 33-year old asked:
Help please? What is the hepatitis b surface antigen?
1 doctor answer • 1 doctor weighed in
A 30-year old female asked:
Would an hiv/antigen test done at 41 days be conclusive?
1 doctor answer • 1 doctor weighed in
A 33-year old asked:
Wondering if hepatitis b e antigen reactive can be cured?
1 doctor answer • 1 doctor weighed in
A 40-year old asked:
Do blood group antigens have the same level of immunogenicity?
1 doctor answer • 3 doctors weighed in
A 42-year old asked:
How much time to develop antibodies after exposure to Rh antigen d?
1 doctor answer • 2 doctors weighed in
A 38-year old asked:
Can you tell me how are b-cells and antibodies presented with antigen?
1 doctor answer • 1 doctor weighed in
A 50-year old asked:
What will happen when a person in unable to present antigens to cytotoxic t cells?
2 doctor answers • 3 doctors weighed in
A 16-year old male asked:
My h.C.B.C.(tri-dot) is non reactive and australian antigen(hbsag) is absent. Is it normal?
1 doctor answer • 1 doctor weighed in
A 20-year old male asked:
What makes immune cells only attack one type of antigen, as opposed to multiple different antigens?
1 doctor answer • 2 doctors weighed in
A 32-year old male asked:
Hi Why p24 antigens disappear? Does it disappear before antibodies produce or its disappear because of antibodies, Thanks?
1 doctor answer • 2 doctors weighed in
A 53-year old female asked:
My son was diagnosed with cdiff toxin a and b gdh antigen detected what does this mean? Ive been reading and it looks like it could be fatal Im so scared?
1 doctor answer • 2 doctors weighed in
A 61-year old male asked:
Good afternoon doctors. If you get a rapid covid antigen test and it comes back negative, how soon afterwards should you wait just in case you need to or want to test again?
2 doctor answers • 2 doctors weighed in
A member asked:
Antigen injections for warts my 14 year old has several warts that we have tried many things for through out the years to no avail. He was just seen by a dermatoligist and had them froze. She said id this doesn't work, which she assumes it won't, her next
1 doctor answer • 2 doctors weighed in
A female asked:
How antibody kill an antigen?
2 doctor answers • 7 doctors weighed in
A 39-year old asked:
What is human leukocyte antigens (hla) ?
1 doctor answer • 6 doctors weighed in
A 43-year old asked:
What's a hepatitis b antigen?
3 doctor answers • 8 doctors weighed in
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