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Agglutinin

Definition

noun, plural: agglutinins

Any substance, usually of biological origin, that causes agglutination or clumping together of cells (e.g. red blood cells) or of bacteria.


Supplement

Agglutinins in the blood plasma are responsible in making sure that there will be blood cells of only one blood type circulating in a person's body. If blood cells of a different blood type enter the body, agglutinins cause agglutination and destruction of these blood cells. For example people with blood type A have agglutinins b in their blood plasma. Hence, blood transfusion of blood type B will cause agglutinins b to react with the cells and cause agglutination.


Word origin: agglutin(ation) + -in

Related terms: partial agglutinin, group agglutinin, major agglutinin, minor agglutinin, o agglutinin, serum agglutinin, somatic agglutinin.

Compare: agglutinogen.


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Blood group inheritance, IBO 2007 question

... agglutination can be type AB. A. I, II, V B. I, III, V C. I, IV, V D. II, III, IV E. II, IV, V Here, v is true, AB type plasma doesnt have a or b agglutinin. So, D ELIMINATED. III is wrong, O is universal donor. So its A or E. Can you help me from here?

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by tittu
Sun May 25, 2008 2:06 am
 
Forum: Genetics
Topic: Blood group inheritance, IBO 2007 question
Replies: 9
Views: 10083

Matching blood groups

... blood clotting also known as coagulation. Agglutination is when blood corpuscles are bond together by the presence of their antibody (agglutinogen-agglutinin reaction). Coagulation is when blood corpuscles are trapped in fibrin network resulted from wounds that break vessels.

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by Dr.Stein
Sat Nov 12, 2005 2:15 am
 
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 15530

Matching blood groups

I'm aware of how blood groups are matched but what I can't understand is WHY blood group O may donate to blood group A when blood group O contains agglutinin a!!!! I was wondering if the agglutinins were removed by some process before being transfused into another person! why can O donate to A ...

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by sdekivit
Fri Nov 11, 2005 5:41 pm
 
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 15530

Matching blood groups

Blood type O has no agglutinogens, BUT it HAS agglutinins a and b!!! Blood type A has agglutinogen A and agglutinin b. In the scenario of O giving to A why don't the agglutinin a (from blood O) and aglutinogen A (from blood type A) agglutinate or ...

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by zenith_beth
Fri Nov 11, 2005 4:18 pm
 
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 15530

Matching blood groups

I'm aware of how blood groups are matched but what I can't understand is WHY blood group O may donate to blood group A when blood group O contains agglutinin a!!!! I was wondering if the agglutinins were removed by some process before being transfused into another person!

See entire post
by zenith_beth
Fri Nov 11, 2005 9:30 am
 
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 15530
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