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Blood type

Blood type, classification of an individual's blood by group—A, B, AB, or O—and Rh-factor (negative or positive). People with blood group AB can receive blood from all other groups; those with group O can donate to all other groups.

See also: Blood.

Additional topics

Blood vessel
Blood transfusion
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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Black haw to Boulez, Pierre