Question

The blood group O does not have any antigen but it does have antibodies it's plasma. How do these 2 characteristics mentioned make blood group O a universal donor?

Answer 1

See it doesnt have antigen but it does have an Rh antigen so it makes blood group O a universal donor in positives blood group only.

But blood group O negative doesnt even have an antigen nor Rh antigen which makes it a universal donor in the whole A,B,O blood group system.It can even give blood To the A,B,O positives blood group