ABO blood group system
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Related to ABO blood groups: universal donor
ABO blood group system
[‚ā‚bē′ō ′bləd ‚grüp ‚sis·təm] (immunology)
A set of multiple alleles found on a single locus on human chromosome 9 that specifies the presence or absence of certain red cell antigens, which determines the ABO blood group.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.