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प्रश्न
Which blood group is called universal donor?
विकल्प
A
O
B
AB
MCQ
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उत्तर
O
Explanation:
Blood group O is called the universal donor because the red blood cells of type O do not have A or B antigens on their surface. This means that they can be safely transfused to people of any other blood group without causing an immune reaction. Therefore, individuals with blood group O can donate blood to any other blood group, making them universal donors.
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