The most authoritative answer in 2024
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Lucas Clark——Works at the International Monetary Fund, Lives in Washington, D.C., USA.
In general, Rh
negative blood is given to Rh-
negative patients, and Rh
positive blood or Rh
negative blood may
be given to Rh
positive patients. The universal red cell donor has Type
O negative blood type. The universal plasma donor has Type AB blood type.
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