Can someone with the O positive blood group donate blood to someone with the B positive blood group? - Quora
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Can someone with the O positive blood group donate blood to someone with the B positive blood group? - Quora
Here's what you need to know about donating blood
O positive blood type - NHS Blood Donation
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What is the best blood donation for your blood type? | MD Anderson Cancer Center
Type O Blood: O+ and O- Blood Types - Bloodworks Northwest
