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1 (of 2) Medicine laureates Julius Axelrod, Sir Bernard Katz and Ulf Von Euler, receiving their cheques for the prize amount from Nils Ståhle (far left), Executive Director of the Nobel Foundation, during their visit to the foundation during Nobel Week in Stockholm, 11 December 1970.

Photo: Keystone/Hulton Archive/Getty Images

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2 (of 2) Bernard Katz in the laboratory.

Source: University College London Photographer unknown