Medically reviewed by David Hampton, MD Key Takeaways O- blood is the universal donor type because it can be used for anyone.AB+ blood can receive any type of blood, making it the universal recipient.

Add Yahoo as a preferred source to see more of our stories on Google. A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune ...

You are probably aware of the two main blood group systems: the AB system and the rhesus system. Under the AB system, there are four main blood types A, B, AB and O. And each of these four types can ...

Medical emergencies strike without warning. Whether it’s a car accident, severe allergic reaction, or unexpected surgery, having family and friends who know your blood type can significantly impact ...

IN the five years that have elapsed since the Rh factor in human red cells — better known as the Rh blood type — was first discovered, there has been a steadily increasing volume of literature on this ...

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A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.