Multiple choice

What blood type qualifies as a universal donor?

  1. O

  2. AB

  3. B-

  4. B+
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Type O blood is considered the universal donor because its red blood cells do not have A or B antigens on their surface, meaning it can be transfused into patients of any blood type without causing an immune reaction.

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