The Rh blood group system was discovered by Karl Landsteiner and Alexander S. Wiener. With whose blood were they experimenting?

Karl Landsteiner

Karl Landsteiner's sick daughter

Prisoners of Auschwitz

Rhesus Macaque

"Rh" stands for "Rhesus". Due to its relatively easy upkeep in captivity and anatomical closeness to humans, rhesuses have been used extensively in medical research.

Kasia

Mate Marschalko

anatomyanimalsbloodhuman anatomymacaquesmedicinemonkeysnature

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Answers by country

the Netherlands

13%

16%

70%

Pakistan

11%

13%

10%

63%

Germany

21%

13%

57%

158

Italy

14%

20%

54%

Greece

22%

13%

54%

Nigeria

22%

20%

50%

India

15%

22%

11%

47%

495

Poland

26%

16%

46%

22975

Norway

25%

45%

Unknown

12%

16%

28%

44%

South Africa

10%

28%

17%

42%

Australia

10%

27%

18%

40%

101

the United Kingdom

27%

24%

36%

350

Ghana

22%

36%

Republic of Ireland

47%

35%

Canada

10%

26%

32%

the United States

31%

28%

29%

922

Malaysia

12%

37%

18%

28%

the Philippines

14%

38%

25%

20%

the United Arab Emirates

25%

20%

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