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blood group·ing(blŭd grūp'ing)
blood groupinga method in which blood is characterized by the presence or absence of particular ANTIGENS on the surface of red blood cells. The antigens can be recognised by their reaction to specific ANTIBODIES which causes AGGLUTINATION to occur. Two well-known blood groupings are the ABO BLOOD GROUP and RHESUS BLOOD GROUP systems.
blood groupinglaboratory classification of blood samples according to their agglutination reactions (see blood type)
Patient discussion about blood grouping
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?
Q. Is it true that people with different blood type should have different diets?
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-?
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.