UBC researchers have found a way to make donated blood universal

Researchers at the University of B.C. think they may have found a way to transform a very common type of human blood — type-A — in the universally usable type-O negative.
This would make blood transfusions much easier, since donor and patient blood types must usually match, unless the donor’s blood is type-O negative. Using type-O negative blood in transfusions doesn’t lead to dangerous, possibly life-threatening, reactions in the patient.
According to Canadian Blood Serv