blood groups

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blood groups


blood groups

classification of types of human blood, originally for defining compatibility for transfusion. ABO groups the four main types, named according to the antigens on the individual's red blood cells (RBC): A, B, AB (both) or O (none). (The donor's blood cells will be catastrophically hydrolysed if the recipient's plasma has antibodies to the donor cells' antigens.) An individual's blood plasma contains antibodies to whichever antigen(s) are not present on that person's own red blood cells; for example, group O (no antigens) can donate to a recipient of any group, because the recipient's plasma antigens can have no effect on the donor's red cells, and group AB (no antibodies) can receive from a donor of any group. Rhesus (Rh) blood groups the majority of people ('Rh positive') have another red blood cell antigen. There is no antibody to this in anyone's plasma, except when a person of the 'Rh-negative' minority has been exposed to the antigen. For example, a Rh-negative mother who has an Rh-positive baby raises antibodies that can harm a later Rh-positive fetus; likewise, a first transfusion with Rh-positive blood raises antibodies that react against a later one.

blood groups, the division of blood into types on the basis of the compatibility of the erythrocytes and serum of one individual with the erythrocytes and serum of another individual. The groups are immunologically and genetically distinct.

Patient discussion about blood groups

Q. HIV - does it infect specific Blood Types? A friend of mine joined the army and they took him to an experiment and infected him with HIV. But he was not infected- he said because he has a certain blood type. Is this true?

A. HIV, as all other viruses need specific cells,s surface proteins which called receptors,in case of HIV these receptors are found in certain WBCs that known as T-helper cells which named as T4 cells. All humans have these T4 cells but some people lack the receptor that necessary for virus attachment and pentration of the cell which leeds to the inablity of the virus to cause infection and become a target for the immune system. But they c can infect other suseptable people.

Q. Is it true that people with different blood type should have different diets?

A. I myself believe that that theory was kind of "psychological" advise : if you believe on it, then you do it, then you will have positive result. But I agree with violet that there is still none appropriate study to prove that theory.
And by the way, what "eat diet according to your blood type" suggests most likely are full lists of healthy foods, so I do believe if you follow a healthy diet program (doesn't have to be blood-type-diet), you will have a healthy life indeed..
Stay healthy always..

Q. is it possible to change my blood type from ab to ab-?

A. not really no...i mean there's a possibility if you'll have bone marrow and liver transplant-,26278,23106284-5007185,00.html

and immunologically there shouldn't be a problem, because the body will react to an addition of proteins but not the lack of them (Rh-). but i fail to see why you want to do that.

More discussions about blood groups
References in periodicals archive ?
The spokesman added: "If you don't know your blood group or if you've never given blood before now is a great time to try.
If you are a donor with one of these important blood groups, please just walk into Newcastle Donor Centre as soon as you can, and we will take your blood.
Now research suggests your blood group could make you more prone to certain illnesses - and also protect you.
The discrepancy may arise because of technical errors, underlying clinical background and treatment the patient is receiving, age and genetic inheritance of blood group antigens.
The frequency of neonatal hemolytic disease and indirect hyperbilirubinemias related with Rh sensitization has decreased with widespread use of anti-D gamma globulin, and the importance of minor blood group (subgroup) incompatibilities has gradually increased (1, 2).
ISLAMABAD -- A number of studies have indicated that your blood group can be the main factor that affects your heath to a large extent.
Here's a list of foods on should consume according to their blood groups.
com/books/the-blood-group-antigen-factsbook/reid/978-0-12-415849-8) 34 other blood group systems with more than 300 known variants .
Q Can you explain how a person's blood group is determined?
Records of blood groups of cases and controls from last year (2014) were retrieved from patients' medical history forms using convenience sampling technique.
The antigens of blood groups ABO and Rhesus (Rh) are the most regularly studied genomic pointers in a large group of people1.