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You are here: Home / Animals / What does the Rh in Rh Factor stand for and how did it Originate?

What does the Rh in Rh Factor stand for and how did it Originate?

July 23, 2020 by Karen Hill

The Rh in Rh factor stands for Rhesus, as in the monkey that was once widely used in medical research.

When Dr. Karl Landsteiner discovered some of the esoteric properties of blood in 1940, he decided to honor the rhesus monkeys that, in the process of making this discovery, were deprived of their freedom, blood, and lives.

The terms Rh factor refers to the D antigen only, which is part of the Rh blood group system, and is the most important blood group system besides the ABO blood group.

Confused yet? We are.

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Filed Under: Animals

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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