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image: Sketching out Cell Theory, circa 1837

Sketching out Cell Theory, circa 1837

By Kate Yandell | August 1, 2013

How a dinner-table conversation between two biologists led to the formulation of the theory that cells are the building blocks of all living organisms.


The Blood Exchange, Circa 1930

By Cristina Luiggi | June 1, 2012

Early 20th century cross circulation experiments on dogs paved the way for milestones in human cardiac surgery.

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image: Animal Electricity, circa 1781

Animal Electricity, circa 1781

By Jessica P. Johnson | September 28, 2011

How an Italian scientist doing Frankenstein-like experiments on dead frogs discovered that the body is powered by electrical impulses.


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