Question

which blood group is called universal donor ?​

Answer 1

Answer:

type O negative

People with type O negative blood are called universal donors because type O negative blood is compatible to any blood recipient's type.

Answer 2

Answer:

Hiiii.... guys

Both O positive and O negative are called as universal donor...

Explanation:

Both are universal donor because O positive can donate blood to A,B,AB and O positive and O negative can donate blood to A ,B,AB and O negative blood groups . So,both are universal donors

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