<P> In transfusions of packed red blood cells , individuals with type O Rh D negative blood are often called universal donors . Those with type AB Rh D positive blood are called universal recipients . However , these terms are only generally true with respect to possible reactions of the recipient 's anti-A and anti-B antibodies to transfused red blood cells , and also possible sensitization to Rh D antigens . One exception is individuals with hh antigen system ( also known as the Bombay phenotype ) who can only receive blood safely from other hh donors , because they form antibodies against the H antigen present on all red blood cells . </P>
<P> In transfusions of packed red blood cells , individuals with type O Rh D negative blood are often called universal donors . Those with type AB Rh D positive blood are called universal recipients . However , these terms are only generally true with respect to possible reactions of the recipient 's anti-A and anti-B antibodies to transfused red blood cells , and also possible sensitization to Rh D antigens . One exception is individuals with hh antigen system ( also known as the Bombay phenotype ) who can only receive blood safely from other hh donors , because they form antibodies against the H antigen present on all red blood cells . </P>
what type of blood is considered the universal donor
what type of blood is considered the universal donor
type O Rh D negative blood
type O Rh D negative blood