Dictionary

ABO system

noun \ˌā-(ˌ)bē-ˈō-\

Definition of ABO SYSTEM

:  the basic system of antigens of human blood behaving in heredity as an allelic unit to produce any of the ABO blood groups

First Known Use of ABO SYSTEM

1944

ABO system

noun \ˌā-(ˌ)bē-ˈō-\   (Medical Dictionary)

Medical Definition of ABO SYSTEM

:  the basic system of antigens of human blood behaving in heredity as an allelic unit to produce any of the ABO blood groups

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