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Genes and Blood Type
What is the best blood donation for your blood type?
Cross-matching - Wikipedia
O positive blood type - NHS Blood Donation
Blood types: What are they and what do they mean?
Rhesus (Rh) Factor: Incompatibility, Complications & Pregnancy
Blood Banking Johns Hopkins Medicine
Rare blood types - NHS Blood Donation
Donating Blood Is Good for Your Health
Blood Type May Affect COVID-19 Infection Risk