Why is blood-typing important and how is mixing incompatible blood types dangerous?

Mixing incompatible blood quickly creates a sea of red dumplings swimming in yellowish liquid, bringing on instantaneous death.

In 1900 Dr. Karl Landsteiner discovered the A, B, and 0 blood groups and demonstrated that blood could be successfully mixed within the same group.

He named the differences the “Rh factor.”

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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