Red Cross Blood Central OH on X: Type O blood is the most in-demand blood type and the first to run out during a shortage. If you have type O negative or

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Nebraska/SW Iowa Red Cross on X: Type O blood is the most in-demand blood type and the first to run out during a shortage. If you have type O negative or O

If people with blood type O can donate blood to anyone, why are so many people looking for blood types A, AB, or B? - Quora

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Blood types

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Blood types