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Agglutination

Definition

noun, plural:

(general) The act of clumping together or adhesion of particles.

(biology) The clumping together of cells (such as bacteria and red blood cells) or particles.


Supplement

Biological agglutination occurs in (but not limited to) the following instances: (1) clumping of cells in response to an antibody, (2) the adhesion of small particles that are suspended in a solution, which are then (usually) precipitated (3) in allergic reactions, when cells clump together to prevent antigens from entering.


Word origin: from the Latin agglutinare, meaning "to glue to"

Related forms: agglutinin (noun), agglutinate (verb).
Related terms: cross agglutination, direct agglutination, false agglutination, group agglutination, indirect agglutination, mixed agglutination, passive agglutination, spontaneous agglutination.


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Blood groups agglutination

By mixing test tube containing Group O cells, UDP-Gal, B-serum with group O serum why would there be agglutination? Can someone please explain the biochemistry behind it?

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by revision
Wed Feb 12, 2014 9:56 pm
 
Forum: Molecular Biology
Topic: Blood groups agglutination
Replies: 0
Views: 656

An Investigation of ABO Group Antigen Structure question?

... Group O cells UDP-Gal A-serum when you mix a drop of cells from each tube with a drop of group O serum on a microscope slide which tubes will show agglutination and which tubes will not? This is what i think the answer is will tube 4 and tube 5 be agglutinated because for tube 4 UDP-Gal adds to ...

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by revision
Fri Feb 07, 2014 8:17 pm
 
Forum: Molecular Biology
Topic: An Investigation of ABO Group Antigen Structure question?
Replies: 1
Views: 1424

Immune System

... by creating a pore in the membrane. Antibodies can be used for tagging, but more often they just bind receptors so they're useless or cause agglutination of invading particles etc. - Cytotoxic T-cells cause cell death as above, and helper T-cells collect foreign antigens so that peptide ...

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by Babybel56
Tue May 10, 2011 7:05 pm
 
Forum: Human Biology
Topic: Immune System
Replies: 4
Views: 5702

Blood donors and receipients

... will only work if a person who receives blood has a blood group that doesn't have any antibodies against the donor blood's antigens, otherwise agglutination will occur. People with blood type O is able to donate blood to people with blood type A. Why is it possible? Wouldn't the A antibodies ...

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by JesnieC
Wed Apr 06, 2011 10:19 am
 
Forum: Human Biology
Topic: Blood donors and receipients
Replies: 3
Views: 2694

Need your help, microbio<

... phylogenetic relationship between bacteria? a. PHAGE b. Nuceleic acid hybridization c. biochemical testing d. amino acid sequencing The slide agglutination test is one type of identification based on: a. phage typing b. biochemical testing c. serology d. protein synthesis

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by excellentaa
Thu Mar 31, 2011 11:15 pm
 
Forum: Microbiology
Topic: Need your help, microbio<
Replies: 2
Views: 1838
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