Why Type O Is the Most Common Blood Type

The most common type of blood is being overtaken by other types. But all types are in huge demand—which is why everyone needs to donate!

What is The Bombay Blood Group?. The unique, rare blood type that not…, by Freda Savahl, Purple Messenger, Dec, 2023

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血液型 o なぜ

What makes Type O blood the most common? - The Jerusalem Post

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