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A antigen

Definition

noun

A major type of blood group-ABO antigen characterized by a terminal N-Acetylgalactosamine bound to H antigen; defines blood type A


Supplement

In humans, blood types are determined by the presence of blood-group antigens, which essentially are of three types: H antigen, A antigen, and B antigen.

The presence of A antigen marks blood type A. Humans with blood type A produce not just the enzyme for H antigen synthesis but also the enzyme (i.e. A-type enzyme) that catalyzes the addition of N-Acetylgalactosamine to a number of H antigen. The number of H-antigen with N-Acetylgalactosamine varies, depending on the subgroup of A antigen genetically expressed in individuals.


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An Investigation of ABO Group Antigen Structure question?

Group O red blood cells have been incubated with either UDP-galactose or UDP-N- acetyl galactosamine together with group A, group B or group O serum for six hours at 37oC as follows: Tube 1 Group O cells UDP-NacG O-serum Tube 2 Group O cells UDP-Gal O-serum Tube 3 Group O cells UDP-NacG B-serum Tube...

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by revision
Fri Feb 07, 2014 8:17 pm
 
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Blood Genetics help please

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by girlslovebarbie
Sat Feb 01, 2014 2:58 pm
 
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by wildfunguy
Tue Oct 29, 2013 3:25 pm
 
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selective advantage for certain blood groups

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by TYLS
Thu Oct 10, 2013 1:16 pm
 
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Topic: selective advantage for certain blood groups
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by Helics
Fri Aug 02, 2013 7:56 pm
 
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