Only 42 people in the world are known to have Rh Null the rarest blood type with no Rh antigens. Should any of these people need blood in the event of serious injury, major surgery or certain diseases they must receive blood from one of these other people. But this blood type also leads to faster destruction of RBCs. The reason behind this is, marriage between cousins and autosomal genes. But that doesn't mean people without this blood type are safe. Every blood type has its own consequences. What are those consequences? Let's find out..

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