Blood Group

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What is a blood group?

The ABO blood group system was discovered by Karl Land Steiner in 1901.

Red blood cells or erythrocytes are present in the blood and contain certain proteins on their surface. These proteins are called antigens. The plasma which is the liquid part contains antibodies which will attack certain antigens if they are present. There are various types of red blood cell antigens - the ABO and rhesus types are the most important. By the time a person is six months old, he naturally will have developed antibodies against the antigens his red blood cells lack.

ABO Blood Group System


A blood group individuals will have type A antigens on the surface of red blood cells and anti-B antibodies in plasma. There are about 20 different subgroups of which A1 and A2 subtypes are the most common.

B blood group individuals will have type B antigens on the surface of red blood cells and anti-A antibodies in your plasma.

AB blood group are those who will have type A and type B antigens on the surface of red blood cells and no antibodies to A or B antigens in plasma.

O blood group are those who will have neither type A or type B antigens on the surface of red blood cells but will have anti-A and anti-B antibodies in plasma.

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gayatri27 Thursday, April 10, 2014

My mother blood group B and my father is A then my blood group is O HOW IS POSSIBLE?

Guest Thursday, May 15, 2014

It seems "A" can be genetically AO, and "B" can be BO, such that the offspring, which gets one letter from each parent, can be OO.

jensen Tuesday, December 31, 2013

My father -o grp my mother _b grp am I possible ab group have check various many possible ans please verify thks

raghav721 Friday, March 22, 2013

My Mom and Dad are A blood group. But I am A-ve! Is it possible ?

asia31 Friday, September 28, 2012

Hi im a 32 year old black make and I have type A2 blood type can someone explain to me about that blood type..

Rlodha Sunday, September 16, 2012

I wish to know the procedure or the process of testng the Blood Group

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