Question

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What's Rh-factor

Answer 1

An antigen found on the surface of red blood cells. Red blood cells with the antigen are said to be Rh positive (Rh+). Those without the surface antigen are said to be Rh negative (Rh-). ... Rh stands for rhesus monkeys, in whose blood this antigen was first found.The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D) antigen only.

Answer 2

Rh-factor

In 1940, Landsteiner and Weiner discovered that apart from antigen A and B, another antigen discovered from Rhesus monkey, may be present on the surface of the RBCs in many people. This antigen was named as Rh-factor or Rhesus factor. The people (almost 85%- 90%) who possess the Rh-factor are called Rh+ and those who do not possess this factor are called Rh-