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Blood group antigens

Blood group antigen

(Science: haematology, immunology) The set of cell surface antigens found chiefly, but not solely, on blood cells.

More than fifteen different blood group systems are recognised in humans. There may be naturally occurring antibodies without immunisation, especially in the case of the ABO system and matching blood groups is important for safe transfusion.

in most cases the antigenic determinant resides in the carbohydrate chains of membrane glycoproteins or glycolipids.

See: rhesus, Duffy, Kell, lewis and MN.


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AB x A (Blood type) Cross Issues and Trihybrid Phenotypes

... right that that none are O. Remember that the blood groups refer to surface antigens of blood cells, A group just has A antigen, B just has B ...

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by domwood
Mon Feb 09, 2009 7:59 pm
 
Forum: Genetics
Topic: AB x A (Blood type) Cross Issues and Trihybrid Phenotypes
Replies: 1
Views: 1147

Re: Blood group inheritance, IBO 2007 question

The father is heterozygous, which makes him Ao, since he has A type. So I is true. The non-reactive son could be AB or Ao. Neither reacts to A antigens. That makes V true. The reactive son could be oo or Bo, which both react to A antigens. The mother could be oo, Bo, or AB. So II is true, but ...

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by Darby
Sun May 25, 2008 9:12 pm
 
Forum: Genetics
Topic: Blood group inheritance, IBO 2007 question
Replies: 8
Views: 2542

Re: Blood type changing spontaneously with a transplant?

... and then becoming Rh+? Since the 'O' in ABO group means that the person simply does not express either A or B antigens - or does this mean that the person in question ... It does have some relevance, because the A and B blood type antigens are very strong antigens, when compared ...

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by biohazard
Mon Mar 03, 2008 1:52 pm
 
Forum: Human Biology
Topic: Blood type changing spontaneously with a transplant?
Replies: 9
Views: 2228

Re: Secretors/Non-Secretors and Blood Group

For common ABO blood typing, the antigens on the surface of erythrocytes are determined, rather than antibodies circulating in the blood. I think ...

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by biohazard
Wed Jan 30, 2008 11:42 am
 
Forum: Human Biology
Topic: Secretors/Non-Secretors and Blood Group
Replies: 1
Views: 1228

Secretors/Non-Secretors and Blood Group

... non-secretors. I have read that secretors pass antigens into secretions such as saliva which identify blood group. If this is the case why are blood grouping tests not conducted ...

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by pekeboo
Wed Jan 30, 2008 10:43 am
 
Forum: Human Biology
Topic: Secretors/Non-Secretors and Blood Group
Replies: 1
Views: 1228
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