type O

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Noun1.type O - the blood group whose red cells carry neither the A nor B antigenstype O - the blood group whose red cells carry neither the A nor B antigens; "people with type O blood are universal donors"
group O, O
blood group, blood type - human blood cells (usually just the red blood cells) that have the same antigens
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive
In Britain, 46 per cent of the population have blood type O, 44 per cent have type A, like Martine, eight per cent have type B and only two per cent have type AB.
New diet makes me feel fab; EXCLUSIVE, DAY 2: HOW MARTINE TOOK THE A-TRAIN TO A SUPER FIGURE
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