Also found in: Dictionary, Thesaurus, Encyclopedia.
blood groupsSee ABO BLOOD GROUPS, KELL BLOOD GROUP SYSTEM and RHESUS FACTOR.
blood groupsclassification 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.
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?
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.