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How Many Blood Types Do Humans Have?

Answer

Humans have 8 different blood types. The same blood types are also found in many animals such as chimpanzees and gorillas. How blood typing begun was with the discovery of three different types by the Austrian scientist, Karl Landsteiner. The blood types are O+, A+, B+, AB+, O-, A-, B-, and AB-. Blood typing is important for blood transfusions. If the antibodies of the recipient's blood and the antigens of the donor's red blood cells do correspond, the donor blood is rejected.
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Q&A Related to "How Many Blood Types Do Humans Have?"
The average adult has about 10 pints of blood in their body. Ten pints is equal to 20 cups of blood. You're not thinking of sharing some of yours with a vampire, are you?
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Blood type: AB negative is the rarest.
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There are four human blood types (A, B, AB, and
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Not all species do have multiple blood groups, so perhaps it's just one of those things. However, many mammals do have multiple blood groups, so perhaps it is a selected trait. One
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