American Red Cross Blood Donors - BLOOD TYPES - 🅰️🅱️🆎🅾️ Do you need to know yours to give? No. Do we tell you after you make your first donation? Yes. Do you
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Why can a type O person donate blood to all other blood types but can only receive type O blood? | Socratic
Can someone with the O positive blood group donate blood to someone with the B positive blood group? - Quora
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