Group O is often cited as the "universal donor" but this only refers to red cell transfusions.

"Though they are the universal donor, they can only accept another O organ."

All she could come up with was, "You're a universal donor."

This report led to the use of group O ("zero") individuals as universal donors.

People with type O negative blood are often called universal donors because they can give blood to any other bloodgroup.

People with type O blood are called "universal donors."

"We needed a universal donor, and I've always wanted blue eyes."

Another factor is an imbalance between the collection and use of certain blood types, particularly the O positive group, the universal donor.

Only about one in every 15 dogs is negative for all antigens and thus, a universal donor.

They'd made a list of universal donors and Miranda was on it.