The Nomination Database for the
Nobel Prize in Physiology or Medicine, 1901-1953

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Year	Nominator	Nominee(s)	Motivation
1932	Ten Broeck	Smith	The demonstration of insect transmission of disease, the difference between the human and the bovine tubercle bacillus, and work on immunity.	Show »
1934	Northrop	Sörensen	Work on enzymes and proteins and especially the application of the theory of hydrogen ion concentration to physiological problems.	Show »
1939	Northrop	Sörensen	Work on the influence of hydrogen ion concentration on biological systems.	Show »
1939	TenBroeck	Northrop Sumner	Northrop: The purification, crystallization and method of action of pepsin and trypsin; purification of their pro-enzymes. Sumner: The purification and crystallization of the enzyme urease and the study of its action.	Show »

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