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Medindia » Consumer Health » Health Information » Blood Group - About Blood Group

Blood Group

What is a blood group?
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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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Posted by:  NandkishorAher  Posted on: 01/11/2012
I DONATED BLOOD AT ONE BLOOD BANK THEY GIVE MY BLOOD GROUP AS O Rh POSITIVE. LATER I DONATED AT ANOTHER BLOOD BANK THEY GIVE MY BLOOD GROUP AS O Rh NEGATIVE IS IT POSSIBLE?

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Posted by:  jency(Guest)  Posted on: 01/02/2012
i m gonna marry..my blood group is O-ve and my husband's is B ve...is there any problem....

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Posted by:  archna(Guest)  Posted on: 12/22/2011
hello...my blood group is AB- and my husband blood group is B , we r trying for baby from last 7-8 months....is there any complications ...bcz we r having different blood groups....rply soon

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Posted by:  11.__  Posted on: 11/10/2011
i am going to marry .my blood group is b negative and my husband's is o positive.does any problem occur

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Posted by:  francegard  Posted on: 10/29/2011
when the mother and the father is o positive will there be any complicATION WITH HAVING A CHILD

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Posted by:  thndr_bladers(Guest)  Posted on: 10/29/2011
My fathers blood group is B and my Mothers blood group is B but mine is A . Is this possible?, or there is any mistake in my blood grouping test done by doctors????....pls! reply

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Posted by:  James-O(Guest)  Posted on: 11/05/2011
Blood types are inherited from the presence/absence of both parents alleles [or genes]. Meaning that a total of 30 combinations of blood type can be created. It is common for a pregnant women to carry a fetus with a blood type different from her own.

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Posted by:  Pratheesh  Posted on: 09/21/2011
My marrige is after few days.. my blood groop is B negetive and girl group is O possitive... so any problems when we trying for a baby? And what precations i have to do before sex?

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Posted by:  Helphim  Posted on: 08/05/2011
My wife is b n mine is o , my 1st child [daughter] is b and my coming 2nd child (son) is b too. Based on the blood group diagram shown son should b b n daughter should be o, is there any mistake on my calculation?

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Posted by:  Keshav_Gupta  Posted on: 08/10/2011
There is no relation of blood group to sex of the child. Your son can have b

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Posted by:  sastry  Posted on: 08/02/2011
hello sir/madam, that i would like to start the ONLINE BLOOD GROUP HISTROY and to for help............ will u give me ur suggestions pls....... Thanks and Regards, SASTRY, 9603038003.

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Posted by:  kellymaree  Posted on: 06/28/2011
my blood type is o as is my mother's but my father's blood type is ab-. does that mean he can't be my father?

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Posted by:  kittyninja_mew(Guest)  Posted on: 07/17/2011
o is the "dominant" blood type, so yeah. It's possible that he's your father. Well, very likely actually.

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Posted by:  Chaudhary01(Guest)  Posted on: 08/31/2011
I am B and my fuoncy is A-. Can i go for the marriage without any complication ??

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