Your blood type matters Unless you've recently given blood, you may not think much about your blood type. The presence or absence of certain molecules called A or B antigens, as well as a protein ...

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You know the "type:" So-called “Type A” personalities are hard-charging, determined to compete and to win. Combining traits such as drive and impatience, Type A was once thought to be related ...

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Blood type is usually determined during hospital visits, especially when a transfusion may be needed, such as in surgery or childbirth. [File, Standard] Many of us first learned our blood types ...