Robert Tigerstedt

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Watergate scandal. Richard M. Nixon. President Nixon gives a press conference and talks to the press, March 12, 1971.

9 American Political Scandals

Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics

10 Greatest Baseball Players of All Time

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Computer mapping, woman at early 1990s computer

Timeline of the 1990s

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

Robert Tigerstedt

Finnish-born physiologist

Learn about this topic in these articles:

discovery of renin

In renin
…was discovered in 1898 by Robert Tigerstedt and Per Bergman, researchers at the Karolinska Institute in Stockholm. See also renin-angiotensin system.
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