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Antigen-antibody reaction

Antigen-antibody reaction

The phenomenon, occurring in vitro or in vivo, of antibody combining with antigen of the type that stimulated the formation of the antibody, thereby resulting in agglutination, precipitation, complement fixation, greater susceptibility to ingestion and destruction by phagocytes, or neutralization of exotoxin.

See: skin test.


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Immune response due to egg.

We just simply don't have an antigen against those proteins. It is that simple. Some people are allergic to things ... smelling a peanut cause some people to go into shock others may have a less severe reaction? Is it just less highly expressed antigen in less immune cells or something ...

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by daniel.kurz
Mon Oct 24, 2011 12:41 am
 
Forum: Human Biology
Topic: Immune response due to egg.
Replies: 3
Views: 2037

Biological Molecules and Cell Reactions Question

No, the reactions are catalysed mainly by proteins (polypeptides), in minor by RNA and also by DNA. ... knowledge, are not neeeded for the catalysis (as I know, they function as stabilizor or antigen or stuff like that). Also, the lipids are not needed for the reactions as that. Yes, ...

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by JackBean
Sat Sep 26, 2009 1:08 pm
 
Forum: Molecular Biology
Topic: Biological Molecules and Cell Reactions Question
Replies: 9
Views: 3493

isotope labelling of cells?

... being replaced by "cold labelling" where as Biohazard pointed antigens are used. This is referenced to as serology. Either fluorescent ... to antigens expressed by infected cells, resulting in an enzymatic reaction which changes the colour of the substrate to, for example, green.

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by Sepals
Wed Mar 26, 2008 1:56 pm
 
Forum: Cell Biology
Topic: isotope labelling of cells?
Replies: 5
Views: 2769

regarding T helper 2!

... from the mast cell? in other words, can we prevent the allergic reaction caused by a reexposure to a specific antigen by blocking the effect of Th2 on IgE? Thanks

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by Yazeed
Sat Jun 02, 2007 6:54 pm
 
Forum: Cell Biology
Topic: regarding T helper 2!
Replies: 1
Views: 1276

Difference between T-Cell and Phagocyte?

... T-Cells and B-Cells. Both are parts of the immune system and neutralize antigens. An antigen is anything that causes an immune response, which isn't ... Infact, many antigens cause no harm at all, which causes an allergic reaction. So, a very basic summary of the immune response is: A pathogen ...

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by jigger
Thu May 31, 2007 6:41 pm
 
Forum: Physiology
Topic: Difference between T-Cell and Phagocyte?
Replies: 10
Views: 50699
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