Which statement about blood type O is true?

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Multiple Choice

Which statement about blood type O is true?

Explanation:
Blood type O is defined by the absence of A and B antigens on red blood cells. Because there are no A or B antigens for recipient antibodies to attack, O red cells can be given to people of any ABO type, so it’s considered the universal donor in RBC transfusions. In practice, the strict universal donor is O negative, since that also lacks Rh antigen and won’t provoke Rh incompatibility. However, people with type O blood have anti-A and anti-B antibodies in their plasma, so they can only receive type O blood. The other statements aren’t true: AB is the universal recipient, type O is not the rarest blood type, and type O can donate to others.

Blood type O is defined by the absence of A and B antigens on red blood cells. Because there are no A or B antigens for recipient antibodies to attack, O red cells can be given to people of any ABO type, so it’s considered the universal donor in RBC transfusions. In practice, the strict universal donor is O negative, since that also lacks Rh antigen and won’t provoke Rh incompatibility. However, people with type O blood have anti-A and anti-B antibodies in their plasma, so they can only receive type O blood. The other statements aren’t true: AB is the universal recipient, type O is not the rarest blood type, and type O can donate to others.

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