Agglutination (biology) | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-29

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Agglutination_(biology)


00:01:30 1 In hematology
00:01:40 1.1 Hemagglutination
00:02:19 1.2 Leukoagglutination
00:02:42 2 In microbiology
00:03:14 3 History of discoveries
00:04:55 4 See also



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SUMMARY
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Agglutination is the clumping of particles.  The word agglutination comes from the Latin agglutinare (glueing to).
Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. This term is commonly used in blood grouping .
This occurs in biology in three main examples:

The clumping of cells such as bacteria or red blood cells in the presence of an antibody or complement. The antibody or other molecule binds multiple particles and joins them, creating a large complex. This increases the efficacy of microbial elimination by phagocytosis as large clumps of bacteria can be eliminated in one pass, versus the elimination of single microbial antigens.
When people are given blood transfusions of the wrong blood group, the antibodies react with the incorrectly transfused blood group and as a result, the erythrocytes clump up and stick together causing them to agglutinate. The coalescing of small particles that are suspended in a solution; these larger masses are then (usually) precipitated.